Language/Multiple-languages/Culture/Internet-Dictionaries
On this page we have put together a collection of the best online dictionaries.
Some are downloadable. You can make use of GoldenDict to merge them.
Dictionaries listed must be digitalised and are able to be searched by queries.
If a database is used by several dictionaries, only one will appear on the list, other popular ones are below the main list.
If a database on a website is from elsewhere, then this database will not be taken into consideration (except OneLook). If a dictionary doesn't mention its source and the source turns out to be from elsewhere, possibly involving plagiarism, then this site will not be mentioned.
In progress.
Main
Source languages are sub-headings, target languages are paragraph. “Searching by entry content” is excluded, i.e. only “searching by headword” is taken into consideration, in terms of “source languages” and “target languages”. This resembles the layout of the paper dictionary.
Websites with same database and unknown name are marked in parenthesis with the term “duplicated”.
Dictionaries with API support are marked with [API]; dictionaries available for offline use (document, webpage, program, database) are marked separately with [offl.d], [offl.w], [offl.p], [offl.db]; dictionaries in public domain are marked with [PD]; dictionaries under public licenses are marked with [PL]. You can use SingleFile or SingleFileZ to save webpages.
Multiple languages
Multiple languages, bidirectional http://www.dict.org/bin/Dict [API offl.db PL]
Multiple languages, bidirectional https://glosbe.com/
Multiple languages, bidirectional https://www.wiktionary.org/ [API offl.db PL]
Multiple languages, bidirectional https://www.dicts.info/ [offl.db]
Multiple languages, partly bidirectional https://dictionary.babylon-software.com/
Multiple languages, partly bidirectional https://dictionary.reverso.net/
Multiple languages, partly bidirectional https://eudict.com/
Multiple languages, partly bidirectional https://www.17-minute-languages.com/
Multiple languages, partly bidirectional https://www.gutenberg.org/ebooks/subjects/search/?query=dictionary [offl.d PD]
Multiple languages, Danish-centered, bidirectional https://www.dinordbog.dk/
Multiple languages, English-centered, partly bidirectional https://bab.la/
Multiple languages, English-centered, partly bidirectional https://dictionary.cambridge.org/
Multiple languages, German-centered, partly bidirectional https://de.pons.com/
Multiple languages, Iranian-Persian-centered, bidirectional https://dictionary.abadis.ir/
Multiple languages, Russian-centered, partly bidirectional http://www.xn--80aacc4bir7b.xn--p1ai/
European languages, Spanish-centered, bidirectional https://www.diccionarios.com/
(duplicated vie-1) Multiple languages, Vietnamese-centered, partly bidirectional http://vdict.co/
Dutch & Korean & English, tridirectional http://www.kordut.be/wordsearch1.php
English & French & Spanish https://www.freelang.net/online/index.php [offl.p]
English & Ilocano, partly bidirectional https://www.pinoydictionary.com/
Iranian Persian & English & Arabic, partly bidirectional http://farsidic.com/en/Lang/FaEn
Iranian Persian & English, partly bidirectional https://aryanpour.com/
Iranian Persian & English, partly bidirectional https://www.farsidics.com/index.php
Spanish, partly bidirectional https://en.openspanish.org/
Karipúna Creole French & English & Spanish http://www.garifunainstitute.com/index.php?module=garifuna_dictionary
Pali & English & Vietnamese, partly bidirectional https://www.budsas.org/ebud/dict-ep/ [offl.w PL]
Yue Chinese & Japanese & English, tridirectional http://gattin.world.coocan.jp/canton.htm
Sign languages https://www.wikisigns.org/ [PL]
Sign languages http://signwiki.org/
English https://talkingdictionary.swarthmore.edu/
Multiple languages, partly bidirectional https://onelook.com/?d=all_&v=&sort=&langdf=all (dictionary collection)
Multiple languages, bidirectional https://komputeko.net/ (computer) [offl.d/db PL]
Multiple languages, bidirectional https://www.proz.com/search/ (terminology)
Multiple languages https://cooljugator.com/ (inflection)
Multiple languages https://forvo.com/ (pronunciation)
Tibetan & English & Mandarin Chinese http://digitaltibetan.org/index.php/Tibetan_Technical_Dictionaries (technology) [offl.d]
African languages
East African languages
European languages, bidirectional https://dictionary.abyssinica.com/ [offl.p]
American languages
Andes languages
Spanish, bidirectional https://www.katari.org/diccionario/diccionario.php
Spanish, bidirectional http://www.folkloredelnorte.com.ar/diccionario.htm
Caribbean languages
English http://wiwords.com/dictionary/jamaica
Surinamese languages
Dutch & English, partly bidirectional http://www.suriname-languages.sil.org/SurinameDicts.html [offl.d/w]
Asian & Oceanian languages
Austronesian languages
English, partly bidirectional https://www.trussel2.com/
Central & West Asian languages
Russian & English, partly bidirectional http://www.translatos.com/
Russian & English, partly bidirectional https://sahifa.tj/
Russian, bidirectional http://oftob.com/
Turkish, bidirectional https://pauctle.com/
Japanese languages
Japanese https://dictionary.goo.ne.jp/dialect/
Japanese https://unidic.ninjal.ac.jp/ [offl.db PL]
Southeast Asian languages
English http://sealang.net/
South Asian languages
Multiple languages, bidirectional http://www.xobdo.org/ [offl.db/p PL]
Multiple languages https://dsalsrv04.uchicago.edu/dictionaries/
Multiple languages https://ltrc.iiit.ac.in/onlineServices/Dictionaries/Dict_Frame.html [offl.db PL]
English, bidirectional https://shabdkosh.com/ [offl.p]
English, bidirectional https://www.ijunoon.com/urdudic/
English, bidirectional https://www.khandbahale.com/
European languages
Multiple languages, French-centered, partly bidirectional https://www.larousse.fr/
European languages, Dutch-centered, bidirectional https://www.mijnwoordenboek.nl/
European languages, Kalaallisut-centered, bidirectional https://tech.oqaasileriffik.gl/tools/katersat/
European languages, Welsh-centered, partly bidirectional http://www.cymraeg.ru/geiriadur/ [offl.db PL]
European languages, German & English bidirectional https://www.dict.cc/
European languages, partly bidirectional http://www.brumgnach.us/wst_page3.html [offl.d]
Finnish & Hungarian & English, tridirectional https://www.finnhun.com/en/dictionary
English & Spanish, bidirectional https://www.lexico.com/
English & Spanish, bidirectional https://www.yourdictionary.com/
Czech, bidirectional https://slovnik.seznam.cz/
Danish https://dsl.dk/udgivelser?type=dictionaries
European languages, bidirectional https://iate.europa.eu/ (terminology) [offl.db(conditioned) PL]
European languages https://xn--abkrzung-85a.info/ (abbreviation)
European languages https://www.the-conjugation.com/ (conjugation)
European languages https://www.verbfinder.com/ (conjugation)
German languages
German http://www.woerterbuchnetz.de/cgi-bin/WBNetz/setupStartSeite.tcl [PL(partial)]
Italian languages
Italian https://pulcinella291.forumfree.it/?t=53074612 [offl.w]
Italian https://www.dialettando.com/dizionario/dizionario.lasso
Nordic languages
Nordic languages https://islex.arnastofnun.is/
Russian languages
Russian, partly bidirectional https://dict.fu-lab.ru/
Uralic languages
European languages, bidirectional http://dicts.uit.no/
Swedish, bidirectional http://ordbok.sametinget.se/
French Creole languages
French http://ecrit.creole.free.fr/lexique.html [offl.w]
French http://www.dictionnaire-creole.com/ [offl.w]
constructed languages
English, bidirectional https://www.elfdict.com/
English, bidirectional http://www.ambar-eldaron.com/english/language.html [offl.d]
French, bidirectional http://www.ambar-eldaron.com/dicos.html [offl.d]
sign languages
Asian languages, bidirectional http://cslds.org/asiansignbank/
European languages, bidirectional http://www.wikisign.org/
Abaza
Russian, bidirectional http://www.abazinka.ru/
Adyghe
Russian, bidirectional http://adygheya.dovlet.net/adyghe-language/adygeiskii-slovar/ [offl.db]
Afrikaans
Multiple languages, bidirectional https://woordeboek.woxikon.co.za/
English, bidirectional https://rieme.co.za/
Ainu
Japanese https://ainugo.ainu-museum.or.jp/
Japanese https://city.hokkai.or.jp/~ayaedu/hazime/ainuc.html [offl.w]
Japanese http://aynu.r-estate-site.com/ [offl.db]
Japanese http://tommy1949.world.coocan.jp/aynudictionary.htm [offl.w]
English http://www.raccoonbend.com/languages/ainuenglish.html [offl.w]
Alabama
English https://archive.org/details/dictionaryalabama/ [offl.d]
Albanian
Tosk Albanian
Tosk Albanian https://fjalorthi.com/
American Sign Language
English, bidirectional https://www.handspeak.com/word/
Amharic
European languages, bidirectional https://www.amharicpro.com/
English https://amharicdictionary.com/
Ancient Greek
Italian https://www.grecoantico.com/
Apma
Bislama & English http://www.pentecostisland.net/languages/apma/index.htm [offl.d]
Arabic
Arabic https://www.alburaq.net/
Arabic http://www.baheth.info/index.jsp
Standard Arabic https://en.mo3jam.com/
Egyptian Arabic
English, bidirectional https://eu.lisaanmasry.org/online/search.php [offl.d/p PL]
Standard Arabic
Multiple languages, bidircetional https://www.almaany.com/
Multiple languages, bidircetional https://www.arabdict.com/
Standard Arabic https://www.maajim.com/dictionary
English https://www.freearabicdictionary.com/ [offl]
English https://github.com/devjustly/en_ar_dict [offl.db]
Aragonese
Spanish https://www.diccionarioaragones.com/ [offl.w]
Spanish http://www.godina.es/diccionario.htm [offl.w]
Spanish http://www.lenguasdearagon.org/herramientas-y-servicios/#diccionarios [offl.d]
Armenian
European languages, bidirectional http://www.nayiri.com/
English https://dictionary.hayastan.com/
Arpitan
French https://dicofranpro.llm.umontreal.ca/
French http://forezhistoire.free.fr/patois-du-forez-lexique.html [offl.d]
French http://mc42.free.fr/patois.htm [offl.w PD]
Asturian
Asturian http://www.academiadelallingua.com/diccionariu/index.php
Spanish https://mas.lne.es/diccionario/
Spanish http://www.senderismoenasturias.es/testbabl.htm [offl.w]
Spanish https://www.xuliocs.com/diccionario-asturiano-etimologico-etnografico.php (etymology)
Azerbaijani
European languages, bidirectional https://azerdict.com/
Bajan
English https://www.barbadospocketguide.com/our-island-barbados/about-barbados/bajan-dialect.html [offl.w]
English http://barbados.gssites.com/pages/links/bajan_words.html [offl.w]
Balinese
English https://dictionary.basabali.org/Dictionary
Barasana-Eduria
Spanish, bidirectional https://www.sil.org/resources/archives/55657 [offl.d]
Bashkir
Russian, bidirectional https://huzlek.bashqort.com/
Bavarian
German https://deutsch-bairisch.de/vokabeln/ [offl.w]
German https://www.bayrisches-woerterbuch.de/bairisch-lernen/aussprache-bayrisch/ [offl.w]
German https://www.volkswoerterbuch.at/woerterbuch
Bengali
Bengali & English, bidirectional http://www.english-bangla.com/
Berber
Multiple languages https://amawal.net/forums/topic/the-online-amazigh-dictionary
European languages http://asegzawal.com/english/
English, bidirectional https://friendsofmorocco.org/Docs/Dict/Tamazizght_toc.htm [offl.d]
Tachelhit
English, bidirectional https://friendsofmorocco.org/learnTashlheet.htm [offl.d]
Bislama
English, bidirectional http://www.pentecostisland.net/languages/bislama/index.htm [offl.d]
Breton
French, bidirectional http://guythomas.free.fr/francais_breton.htm [offl.w]
French https://www.brezhoneg.org/fr/blog/dictionnaire-breton-francais [offl.d]
French http://www.fr.brezhoneg.bzh/35-outils-linguistiques.htm
French http://devri.bzh/ (diachronic)
Bulgarian
Bulgarian https://rechnik.chitanka.info/ [offl.db]
English, bidirectional http://kbedic.sourceforge.net/online/index_en.html
Burmese
English, bidirectional https://www.ornagai.com/#/ [offl.p PL]
Buryat
Russian, bidirectional https://buryat-lang.ru/
Russian, bidirectional https://uulen.gazeta-n1.ru/
Cajun French
French & English https://www.lsu.edu/hss/french/undergraduate_program/cajun_french/index.php [offl.w]
English https://sugiebee.blogspot.com/p/cajun-french-language-dictionary.html [offl.w]
Caribbean Hindustani
English https://rajiv-mohabir.squarespace.com/news-1/2015/10/30/guyanese-hindi-dictionary (Guyanese dialect) [offl.d]
Catalan
European languages, bidirectional https://www.diccionaris.cat/
European languages, bidirectional http://www.diccionari.cat/
Catalan https://diccionarivalencia.com/
Catalan https://www.avl.gva.es/lexicval/
Catalan https://www.dicdidac.cat/
English, bidirectional http://www.catalandictionary.org/en/search/ [offl.d PL]
Catalan https://f-droid.org/en/packages/uk.co.busydoingnothing.catverbs/ (conjugation) [offl.p]
Chechen
Russian, bidirectional https://dosh.govzalla.com/
Russian, bidirectional https://ps95.ru/dikdosham/
Chinese
English & Mandarin Chinese, partly bidirectional https://dict.cn/
Chinese languages https://cn.voicedic.com/ (pronunciation)
Chinese languages https://www.syndict.com/index.htm (pronunciation)
Hakka Chinese
Mandarin Chinese https://hakkadict.moe.edu.tw/cgi-bin/gs32/gsweb.cgi/login?o=dwebmge
Literary Chinese
Literary Chinese http://www.kangxizidian.com/
Literary Chinese https://humanum.arts.cuhk.edu.hk/Lexis/lexi-mf/
Mandarin Chinese
Multiple languages, bidirectional https://dict.hjenglish.com/
Multiple languages, bidirectional https://dict.youdao.com/
Multiple languages, bidirectional http://www.ichacha.net/
European languages, bidirectional https://dict.eudic.net/
Mandarin Chinese https://www.zdic.net/
Mandarin Chinese http://dict.revised.moe.edu.tw/cbdic/
English, bidirectional https://www.iciba.com/
English https://humanum.arts.cuhk.edu.hk/Lexis/Lindict/
English https://www.mdbg.net/chinese/dictionary [offl.db PL]
English https://www.pleco.com/ [offl.p]
English http://chinesenotes.com/
English http://zhongwen.com/
French https://chine.in/mandarin/dictionnaire/ [offl.db PL]
French http://www.chine-culture.com/chinois/dictionnaire-chinois.php
German https://handedict.zydeo.net/de [offl.db PL]
Hungarian https://chdict.zydeo.net/hu [offl.db PL]
Hungarian https://www.morphologic.hu/kinai/index.php
Japanese http://ctrans.org/
Russian, bidirectional https://www.qianyix.com/
Russian, bidirectional https://bkrs.info/ [offl.p]
Russian https://www.chinese-russian.com/zd/
English, bidirectional https://dict.cnki.net/ (terminology)
English, bidirectional http://terms.naer.edu.tw/ (terminology) [offl.d]
English https://etymology.azurewebsites.net/ | https://hanziyuan.net/ (etymology)
Min Nan Chinese
Mandarin Chinese https://twblg.dict.edu.tw/holodict_new/
English, bidirectional http://www.taiwanesedictionary.org/ [offl.d PL]
Wu Chinese
Wu Chinese https://wu-chinese.com/minidict/ (pronunciation)
Xiang Chinese
Mandarin Chinese https://nushuscript.org/nsbzz/dict/ (Nüshu)
Yue Chinese
Mandarin Chinese, bidirectional https://apps.itsc.cuhk.edu.hk/hanyu/Page/Cover.aspx
Mandarin Chinese https://humanum.arts.cuhk.edu.hk/Lexis/lexi-can/
English https://www.cccanto.org/ [offl.db PL]
English http://www.cantonese.sheik.co.uk/dictionary/
Chuvash
Russian http://samah.chv.su/
Russian http://enc.cap.ru/ (encyclopaedia)
Cimbrian
Italian http://www.zimbarbort.it/
Coptic
English https://archive.org/details/CopticDictionary_201711/ [offl.d]
Cornish
English, bidirectional https://www.cornishdictionary.org.uk/
Corsican
French, bidirectional https://www.parlamicorsu.com/
Crimean Tatar
Russian, bidirectional https://ana-yurt.com/qrt/krymskotatarsko-russkiy-slovar-na-kirillice [offl.p]
Russian, bidirectional https://qlugat.ru/
Czech
Multiple languages, bidirectional https://slovniky.lingea.sk/
European languages, bidirectional http://slovniky.centrum.cz/
Czech https://www.nechybujte.cz/
English, bidirectional https://www.online-slovnik.cz/
Dalmatian
Croatian https://blog.dnevnik.hr/dalmata/2008/11/1625601953/rjecnik-dalmatinskih-pojmova.html [offl.w PL]
Croatian https://ce-4.forumotion.com/t1180-rjecnik-dalmatinski-splitski-pojmovi [offl.w]
Croatian https://www.brela.com/brolanenses/rjecnik.htm [offl.w]
Croatian https://www.forum.hr/showthread.php?t=581246 [offl.w]
Croatian http://www.gimnazija-jbarakovica-zd.skole.hr/dalmatinski%20rjecnik [offl.w]
Croatian http://www.hobibonsai.com/index.php?topic=269.0 [offl.w]
Croatian http://www.almissa.com/rjecnik/slova/a.htm (Omiš dialect) [offl.w]
Danish
European languages, bidirectional https://www.ordbogen.com/
Danish Sign Language http://www.tegnsprog.dk/
Dhivehi
English, bidirectional http://basfoiy.mv/ [offl.p PL]
Dinka
English https://archive.org/details/dinkadictionary/ [offl.d]
Dungan
English https://ivospira.bitbucket.io/dungan_dict/dungan_dict.html
Dutch
Multiple languages https://www.woordenboek.eu/
Dutch languages https://www.dialectloket.be/woord/
Dutch https://www.vandale.nl/
Dutch https://www.woorden.org/
Dutch http://gtb.inl.nl/search/
Dutch https://synoniemen.net/ (synonym)
English, bidirectional https://www.nederlands-engels-woordenboek.com/nl/woordenboek-nederlands-engels | https://www.english-dutch-dictionary.com/en/dictionary-english-dutch
German, bidirectional https://www.uitmuntend.de/
Emilian
Italian https://www.fraintesa.it/2016/01/lista-parole-modenese/ [offl.w]
English
Multiple languages, bidirectional https://tureng.com/
Multiple languages, bidirectional https://www.collinsdictionary.com/
Multiple languages, bidirectional https://www.dict.com/
Multiple languages, bidirectional https://www.linguee.com/ [offl.p]
Multiple languages, bidirectional https://www.wordreference.com/
Multiple languages, partly bidirectional https://www.ldoceonline.com/
Asian languages, bidirectional http://tamilcube.com/
South Asian languages https://www.kapruka.com/dictionary/EnglishToSinhala.jsp
Sign languages https://www.spreadthesign.com/
Amharic & Tigrinya https://github.com/admasethiopia/dictionaries [offl.d]
English https://ftp.gnu.org/old-gnu/gcide/gcide-0.46/ [offl.db PL]
English https://www.bartleby.com/110/ [PD]
English https://www.dictionary.com/
English https://www.macmillandictionary.com/
English https://www.merriam-webster.com/
English https://www.oxfordlearnersdictionaries.com/
English https://www.thefreedictionary.com/
English https://www.vocabulary.com/
English https://www.websters1913.com/ [PD]
English https://www.worldwidewords.org/index.htm
English http://www.finedictionary.com/
English http://triggs.djvu.org/century-dictionary.com/ [PD]
American Sign Language https://commtechlab.msu.edu/sites/aslweb/browser.htm
American Sign Language https://signbank.org/dictionaries/ [offl.d PL]
American Sign Language https://www.lifeprint.com/dictionary.htm
American Sign Language https://www.signasl.org/
Australian Sign Language http://www.auslan.org.au/
Bengali https://www.bdwebguide.com/bengalidictionary.php
Bengali https://www.ovidhan.org/
Bengali https://gitlab.com/r_0_0_t/Bangla-Dictionary/-/tree/master/Bangla%20Dicitonary%20V2/src [offl.d PL]
British Sign Language https://bslsignbank.ucl.ac.uk/dictionary/
British Sign Language https://www.britishsignlanguage.com/
British Sign Language https://www.british-sign.co.uk/british-sign-language/dictionary/
British Sign Language https://www.signbsl.com/
Burmese https://www.myordbok.com/
Cherokee http://www.ctc.volant.org/cherokee/Mirror/whitedoves_eng-cher.html [offl.w]
Indian Sign Language http://indiansignlanguage.org/dictionary/
Iranian Persian https://gitlab.com/SiminDictionary/Simin/-/blob/master/dbs/en2fa.db [offl.db PL]
Iranian Persian https://gitlab.com/psyguy/EnglishToPersianDictionaries [offl.db PL]
Kazakh http://www.eng-kaz.kz/
Lahu https://escholarship.org/uc/item/72n9j1f6 [offl.d]
Lithuanian https://aare.pri.ee/dictionary.html
Louisiana Creole http://www.louisianacreoledictionary.com/Dictionary.aspx
Malayalam https://olam.in/ [offl.p]
Mandarin Chinese https://github.com/program-in-chinese/webextension_english_chinese_dictionary [offl.p]
Nepali https://gitlab.com/nirooj56/Nepdict/-/blob/master/Licence [offl.db PL]
Nepali https://www.englishnepalidictionary.com/
New Zealand Sign Language https://www.nzsl.nz/ [offl.p PL]
Russian https://melodict.com/
South African Sign Language https://www.realsasl.com/
Standard Estonian https://www.filosoft.ee/dict_enet/
Standard Estonian http://dict.ibs.ee/index.html
Tamil http://ccat.sas.upenn.edu/plc/tamilweb/englishtamil.html [offl.w]
Tamil http://www.tamilvu.org/library/pmdictionary/html/madsind.htm
Telugu http://en2te.sourceforge.net/tel-dictionary/
Uighur http://www.uighurdictionary.com/
Urdu https://www.studypart.com/english-to-urdu-dictionary/
Urdu https://www.urduword.com/
Vietnamese https://github.com/ntd172/kindle-dict [offl.p]
English https://www.affixes.org/index.html (affix)
English https://www.acronymfinder.com/ (acronym)
English https://www.allacronyms.com/ (acronym)
English https://www.churchofjesuschrist.org/study/scriptures/bd/introduction?lang=eng (Bible)
English https://www.chemistry-dictionary.com/ (chemistry)
English https://www.daredictionary.com/ (dialect in the US)
English https://www.etymonline.com/ (etymology)
English https://foldoc.org/ (jargon)
English https://www.netlingo.com/dictionary-new.php (jargon)
English https://dictionary.law.com/ (law)
English http://www.mysmu.edu/faculty/jacklee/ (Singapore English)
English https://slang-dict.herokuapp.com/ (slang) [offl.d]
English https://www.noslang.com/dictionary/ (slang)
English https://www.slanglang.net/ (slang)
English https://www.urbandictionary.com/ (slang)
English http://www.peevish.co.uk/slang/ (slang)
English http://www.ukrainecalling.com/textspeak.aspx (slang)
Iranian Persian https://github.com/hkhojasteh/EN-FA-CS-Dictionary (computer science) [offl.w]
Esperanto
Multiple languages http://www.reta-vortaro.de/revo/ [offl.d/db PL]
Multiple languages, bidirectional http://www.la-vortaro.net/ [offl.p]
European languages http://www.eventoj.hu/steb/ [offl.d/w]
European languages http://www.familienforschung-pabst.de/EspBiographien/PPLeitS.htm [offl.d]
English & French https://www.esperanto-panorama.net/vortaro/ [offl.w]
Esperanto http://vortaro.net/
Esperanto http://www.eventoj.hu/steb/gxenerala_naturscienco/enciklopedio-1/encikl.htm [offl.w]
English http://www.denisowski.org/Esperanto/Esperanto.html [offl.d]
German, bidirectional https://agei.esperanto-urbo.de/netzkurs/
Portuguese, bidirectional https://vortaro.esperanto.org.br/
Russian, bidirectional https://www.esperanto.mv.ru/ESP/vframe.html [offl.db/p]
Estonian
Multiple languages, partly bidirectional https://portaal.eki.ee/sonaraamatud.html
Standard Estonian
Latin, bidirectional http://www.ut.ee/klassik/dict/dict.cgi
Võro
Estonian, bidirectional https://synaq.org/
Evenki
Russian, bidirectional http://www.evengus.ru/slovari/
Extremaduran
Spanish https://diccionariovirtualextremadura.blogspot.com/ [offl.w]
Faroese
Multiple languages, partly bidirectional https://sprotin.fo/
Filipino
English https://www.leksyon.com/
Finnish
Finnish https://www.kielitoimistonsanakirja.fi/#/
English, bidirectional https://www.suomienglantisanakirja.fi/ [PL]
English, bidirectional http://www.fincd.com/
Flemish
Dutch http://www.vlaamswoordenboek.be/ [PL]
French, bidirectional https://www.anvt.org/fr/documents-mainmenu-5/dictionnaire-1?limit=20&limitstart=20 [offl.d]
French
French https://www.cnrtl.fr/definition/
French https://dvlf.uchicago.edu/
French https://www.dictionnaires.com/
French https://www.le-dictionnaire.com/
French https://www.notrefamille.com/dictionnaire/
Corsican http://www.interromania.com/fr/impara-u-corsu/dizziunariu-corsu
English, bidirectional http://www.french-linguistics.co.uk/dictionary/
Guadeloupean Creole French https://www.potomitan.info/dictionnaire/francais.php [offl.w]
French https://leconjugueur.lefigaro.fr/ (conjugation) [offl.p]
French http://www.conjuguetamere.com/ (conjugation)
Friulian
Italian, bidirectional http://claap.org/it/dizionari-friulani/
Italian, bidirectional http://www.friul.net/dizionario_nazzi/
Galician
Galician https://academia.gal/dicionario
Galician https://digalego.xunta.gal/
Galician https://ilg.usc.es/gl/recursos
Galician http://www.digatic.org/ (telecommunication)
German
Multiple languages, bidirectional https://de.langenscheidt.com/
Multiple languages, bidirectional https://www.leo.org/
European languages, bidirectional https://dict.tu-chemnitz.de/ [offl.db/p PL]
German https://www.duden.de/
German https://www.dwds.de/d/woerterbuecher
German https://www.wissen.de/lexika-und-woerterbuecher
Esperanto https://www.thschuetz.de/esperanto/index.html [offl.p]
German Sign Language https://signdict.org/
Lower Sorbian http://www.boehmak.de/
German http://www.abkuerzungen.de/main.php (abbreviation)
German https://www.verbformen.de/ (conjugation) [PL]
Grenadian Creole English
English http://www.bigdrumnation.org/dictionary_link.htm [offl.w]
Guianese Creole French
French, bidirectional http://www.kaseko.fr/Creole/Lexique_francais_creole.html [offl.w]
Gujarati
English http://ccat.sas.upenn.edu/plc/gujarati/ [offl.d]
English https://archive.org/details/guj-eng_dictionary/ (administration) [offl.d]
Guyanese Creole English
English https://moonsammy.wordpress.com/my-guyana/guyanese-dictionary/ [offl.w]
Haitian
English & French https://www.haiti-reference.com/pages/creole/diction/index.php
English, bidirectional https://www.creolelingo.com/
English, bidirectional https://kreyol.com/dictionary.html [offl.w]
Halkomelem
English, bidirectional https://escholarship.org/uc/item/65r158r4 (Upriver dialect) [offl.d]
Hawaiian
English, bidirectional https://hilo.hawaii.edu/wehe/
English https://manomano.io/
English https://wehewehe.org/
English https://www.to-hawaii.com/hawaiian-dictionary.php [offl.w]
Hawai'i Creole English
English https://dapidgindictionary.com/ [offl.w]
English https://e-hawaii.com/pidgin/
English https://oleloonline.com/glossary-of-hawaiian-words-in-hawaiian-pidgin-english/ [offl.w]
Hausa
English, bidirectional http://kamus.com.ng/ [offl.w]
English, bidirectional http://maguzawa.dyndns.ws/
English http://hausadictionary.com/Main_Page
Hebrew
English, bidirectional https://www.morfix.co.il/
Mandarin Chinese, bidirectional http://myxibolai.com/
Hiligaynon
English https://www.bohol.ph/kved.php
Hindi
English, bidirectional https://dict.hinkhoj.com/ [offl.p]
English, bidirectional http://hindi-english.org/ [PL]
English, bidirectional http://www.cfilt.iitb.ac.in/~hdict/webinterface_user/dict_search_user.php
Hungarian
English & German, bidirectional https://topszotar.hu/angol-magyar-szotar/
Hungarian https://wikiszotar.hu/ertelmezo-szotar/Kezd%C5%91lap
Hunsrik
Portuguese https://hunsriqueanoriograndense.wordpress.com/dicionario-werterbuch/ [offl.d]
Icelandic
English https://www.ling.upenn.edu/~kurisuto/germanic/oi_cleasbyvigfusson_about.html [offl.db]
English http://digicoll.library.wisc.edu/IcelOnline/Search.TEId.html
Ido
Multiple languages, partly bidirectional https://www.idolinguo.org.uk/ [offl.w]
English https://www.idolinguo.org.uk/idendyer.htm [offl.w]
Igbo
English https://www.igboenglish.com/ [offl.w]
English https://www.igboguide.org/HT-vocabulary.htm [offl.w]
Indonesian
Indonesian https://kateglo.com/ [API PL]
English, bidirectional https://indodic.com/popupindex.html [offl.p]
English, bidirectional https://www.kamus.net/
English, bidirectional http://bahasacube.com/
English, bidirectional https://www.sederet.com/
Ingush
Russian, bidirectional https://doshlorg.ru/
Interlingua
English https://www.interlingua.com/ied/cerca/
English http://www.denisowski.org/Interlingua/IEDICT/iedict_readme.html [offl.d PL]
Interlingue
European languages, partly bidirectional https://www.ie-munde.com/materiale-por-aprender-interlingue-lehrmaterial.html [offl.d]
Inuktitut
English & French, bidirectional https://tusaalanga.ca/glossary
English, bidirectional http://www.labradorvirtualmuseum.ca/home/inuttut_dictionary.htm
Iquito
English, bidirectional https://escholarship.org/uc/item/97h5t0gz [offl.d]
Iranian Persian
Iranian Persian & English, bidirectional https://www.farsilookup.com/
Iranian Persian https://www.vajehyab.com/
English, bidirectional https://fastdic.com/ [offl.p]
English, bidirectional http://www.dictionary-farsi.com/
English, bidirectional http://www.farsidictionary.net/
German, bidirectional https://www.loghatnameh.de/
English https://gitlab.com/hamidhszd/english-persian-dictionary-in-python/-/blob/master/english%20persian%20dictionary%20in%20python.py [offl.db]
Irish
Irish & English, bidirectional https://www.teanglann.ie/en/ [offl.p]
English http://www.ceantar.org/Dicts/Gram/index.html [offl.w]
English http://www.smo.uhi.ac.uk/gaeilge/focloiri/abhair/riomhaire.html (computer)
Istriot
Croatian http://www.istarski-rjecnik.com/pretrazivanje/
Italian
Multiple languages, bidirectional http://www.sapere.it/sapere/dizionari.html
European languages, bidirectional https://dizionari.corriere.it/
European languages, bidirectional https://www.dizionario-italiano.it/
European languages, bidirectional https://www.garzantilinguistica.it/
European languages, bidirectional https://www.grandidizionari.it/
Italian & English, bidirectional https://dizionari.repubblica.it/
Italian languages, bidirectional https://www.dialettando.com/dizionario/dizionario.lasso
Italian https://dizionario.internazionale.it/
Italian https://sapere.virgilio.it/
Italian https://www.dizy.com/
Italian https://www.simone.it/newdiz/newdiz.php
Italian http://tlio.ovi.cnr.it/TLIO/
Italian http://www.lessicografia.it/lettura.jsp
Italian http://www.tommaseobellini.it/#/
Italian https://www.italian-verbs.com/ (conjugation)
Italian https://www.etimo.it/ (etymology)
Italian https://archive.org/details/vohabolariofiorentino (Tuscan dialect) [offl.d]
Jamaican Creole English
English https://jamaicanpatwah.com/ [offl.p]
English https://jamaicans.com/dictionary/
English https://niceup.com/patois.html [offl.w]
English https://rhetoricofreggaer.blogspot.com/2009/10/jamaican-patois-dictionary.html [offl.w]
English https://www.jah-lyrics.com/dictionary [offl.w]
English http://members.tripod.com/~Livi_d/language/patois_dictionary.htm [offl.w]
English http://www.eng.fju.edu.tw/worldlit/caribbean/dictionary.htm [offl.w]
English https://www.real-jamaica-vacations.com/jamaican-slang.html (slang) [offl.w]
Japanese
Multiple languages, bidirectional https://www.weblio.jp/
European languages, bidirectional http://nihongo.monash.edu/cgi-bin/wwwjdic [offl.db PL]
Japanese & English, bidirectional https://dictionary.goo.ne.jp/
Japanese https://kotobank.jp/
English, bidirectional https://eow.alc.co.jp/
English, bidirectional http://dictionary.j-cat.org/JtoE/index.php
Yue Chinese https://www.cantonese.jp/
Jeju
Korean https://jeju.go.kr/culture/dialect/dictionary.htm
Kalaallisut
Eurepoan languages https://www.groenord.dk/ [offl.p]
Kalmyk
Kalmyk https://gitlab.com/lloid.x/kalmyk_public_dictionary/-/blob/master/halimag_oros_toli.json [offl.db]
Karachay-Balkar
Russian http://www.elbrusoid.org/dictionary/
Karipúna Creole French
Spanish https://pueblosoriginarios.com/lenguas/garifuna.php [offl.w]
Karok
English https://linguistics.berkeley.edu/~karuk/index.php
Kazakh
English, bidirectional https://audaru.com/
Mandarin Chinese, bidirectional https://www.sozdik.net/
Russian, bidirectional https://sozdik.kz/
Khakas
Russian, bidirectional http://sostik.info/
Khmer
Khmer & English, bidirectional http://dictionary.tovnah.com/
Khmer & English, bidirectional http://www.english-khmer.com/
Kirghiz
Russian, bidirectional http://tili.kg/
Klingon
English http://klingonska.org/dict/ [PL]
Kölsch
German, bidirectional https://www.koelsch-akademie.de/nc/veroeffentlichungen/online-woerterbuch/
German https://www.koelsch-woerterbuch.de/
German https://www.ff-stadtfuehrungen.koeln/koelschlexikon.html [offl.w]
Korean
Multiple languages, bidirectional https://dict.naver.com/
Multiple languages, bidirectional https://dic.daum.net/
Multiple languages https://krdict.korean.go.kr/mainAction [API PL]
Korean https://stdict.korean.go.kr/main/main.do [API PL]
English, bidirectional https://zkorean.com/dictionary/search
English, bidirectional http://dic.impact.pe.kr/
English http://www.kdict.org/ [offl.db PL]
English https://play.google.com/store/apps/details?id=com.rieul.rieulkorean [offl.p]
English https://www.toktogi.com/ [offl.p]
German, bidirectional http://www.koreanisch-deutsch.de/index.php
Kotava
Multiple languages, bidirectional https://kotava.org/ravlemak/ravlemak.php
Multiple languages https://www.international-language.org/ [offl.d]
French https://kotava.org/fr/fr_ravlemeem_kt.php [offl.d]
French https://www.europalingua.eu/ravlemak/Tiddly_dict_AVK-FRA.html
Krio
English http://www.sierra-leone.org/Krio/dictionary-a.html [offl.w]
Kriol
English https://www.sil.org/resources/archives/10602 [offl.d]
English http://ausil.org/Dictionary/Kriol/index-english/index.htm [offl.p]
Láadan
English & Spanish https://gitlab.com/aya-dan-conlangs/data-laadan-dictionaries [offl.d]
Ladin
Italian http://dls.ladintal.it/
Latin
European languages https://www.online-latin-dictionary.com/
Danish https://latinskordbog.dk/
English, bidirectional https://latin-dictionary.net/search/latin/
English https://humanum.arts.cuhk.edu.hk/Lexis/Latin/
English http://latindictionary.wikidot.com/index
Latvian
European languages https://www.letonika.lv/groups/default.aspx?g=2
Latvian https://tezaurs.lv/ [API offl.db PL]
Latgalian https://latgals.simplesite.com/424788061 [offl.w]
Latgalian http://www.vuordineica.lv/
Lezghian
Lezghian & Russian, bidirectional https://gaf.lezgichal.ru/
Leonese
Spanish https://www.elparamo.net/comarca/vocabulario [offl.w]
Spanish, bidirectional https://www.lengualeonesa.eu/
Spanish, bidirectional https://www.pallabreirulliones.com/traductor/buscar
Spanish http://www.fuentesdeleon.es/diccionario-y-frases/ [offl.w]
Ligurian
Italian https://pulcinella291.forumfree.it/?t=53340142 [offl.w]
Italian http://paolin.altervista.org/dizge/index.php [offl.w]
Italian http://www.zeneize.net/itze/main.asp [offl.w]
Italian & Latin http://www.storiapatriasavona.it/vocabolario-ligure/ (bibliography) [offl.d]
Lingua Franca Nova
European languages http://elefen.org/disionario/ [offl.db/w]
Lithuanian
Multiple languages https://www.lietuviuzodynas.lt/zodynas
European languages, bidirectional http://www.anglu-lietuviu.com/
European languages https://www.zodynas.lt/
English Lithuanian bidirectional https://www.angluzodynas.lt/
Latvian & Latgalian http://hipilatlit.ru.lv/dictionary/eng/dictionary.html
Lithuanian http://www.lkz.lt/
English, bidirectional http://lietuviu-anglu.xb.lt/
Hungarian https://www.morphologic.hu/litvan/index.php
Livonian
Latvian & Estonian http://www.livones.net/lingua/en/vardnica/
Lojban
Multiple languages https://la-lojban.github.io/sutysisku/en/
English https://gitlab.com/lojban/lojban-english-apple-dictionary/-/tree/master/src [offl.db PL]
Lower Sorbian
German, bidirectional https://www.dolnoserbski.de/
Low German
German, bidirectional https://www.platt-wb.de/
German https://deutsch-plattdeutsch.de/index.php/test/
German https://www.ndr.de/kultur/norddeutsche_sprache/plattdeutsch/woerterbuch101.html [offl.w]
German https://www.niederdeutsche-literatur.de/dwn/index.php
German http://www.plattdeutsches-woerterbuch.de/
German http://www.plattmaster.de/wordbook.htm [offl.w]
German http://www.plattschool.de/Material.htm [offl.w]
Luxembourgish
European languages https://www.lod.lu/
French, bidirectional http://www.dico.lu/
Malay
Malay https://prpm.dbp.gov.my/
English, bidirectional http://malaycube.com/
Malayalam
Malayalam & English https://olam.in/ [offl.db/p PL]
Manpuche
English https://archive.org/details/dictionarymapuche/ [offl.d]
Māori
Polynesian languages, bidirectional http://nzetc.victoria.ac.nz/tm/scholarly/tei-TreMaor.html [offl.w PL]
Māori https://hepatakakupu.nz/
English, bidirectional http://nzetc.victoria.ac.nz/tm/scholarly/tei-WillDict.html [offl.w PL]
English https://maoridictionary.co.nz/ [offl.p]
Maori & English https://www.wgtn.ac.nz/law/research/our-research/past-research-projects/legal-maori/dictionary (law)
Marathi
English, bidirectional https://marathidictionary.org/
Mi'kmaq
English https://mikmaqonline.org/ [PL]
Mirandese
Portuguese https://www.mirandadodouro.com/dicionario/
Mócheno
Italian http://kib.ladintal.it/
Modern Greek
Modern Greek & English https://www.greek-language.gr/greekLang/index.html
English https://greeklexicon.org/ [offl.d]
French https://gitlab.com/crosswire-bible-society/dictionnaire-grec-francais-de-bailly/-/blob/master/sources/bailly-gr-fr.xml [offl.db PD]
Italian, bidirectional https://www.grecomoderno.com/
Italian https://gitlab.com/crosswire-bible-society/dizionario-greco-italiano/-/blob/master/Diz_gr_it.xml [offl.db]
Modern Greek https://lexikolefkadas.gr/ (Lefkada idiom)
Moksha
Russian https://paevo.ucoz.ru/index/mokshansko_russkij_slovar/0-184 [offl.w]
Mon
English, bidirectional https://it-villa.blogspot.com/ [offl.p]
Mongolian
Multiple languages, bidirectional http://www.bolor-toli.com/
Neapolitan
Italian http://www.ndonio.it/Napoli%20Glossario.htm [offl.w]
Nepali
Nepali https://gitlab.com/ayys/Nepali-Large-Dictionary/-/tree/master/NBS [offl.d/db PL]
Norfolk
English http://www.norfolkdialect.com/glossary.htm [offl.w]
English http://www.norfolkonlinenews.com/norfolk-words.html [offl.w]
North Frisian
German, bidirectional https://www.friisk.org/ (Söl'ring dialect)
Norwegian
Multiple languages, bidirectional https://lexin.oslomet.no/
Norwegian https://ordbok.uib.no/
English https://gitlab.com/C0rn3j/NorwegianToEnglishDict [offl.d PL]
Occitan
Occitan & French, bidirectional https://locongres.org/oc/
Old English
English https://en.wikisource.org/wiki/Bright%27s_Anglo-Saxon_Reader/Glossary [offl PD]
Ossetian
Russian, bidirectional http://slovar.iriston.com/
Russian, bidirectional https://sogpi.org/ru/Кафедры/Кафедра-ЮНЕСКО [offl.d]
Russian https://ironau.ru/vortaro.php
Pacific Gulf Yupik
English https://wiinaq.herokuapp.com/ems/
Pali
Multiple languages http://dhamma.sutta.org/pali-course/Pali-Chinese-English%20Dictionary.html [offl.p PL]
Panjabi
English https://punjabaudit.blogspot.com/2014/04/punjabi-to-english-dictionary.html [offl.d]
English http://dic.learnpunjabi.org/
Papiamento
Dutch http://de-beijer.aw/pap/papiamento-nederlands.html [offl.w]
English https://thevore.com/papiamento-to-english/ [offl.w]
Pennsylvania German
English, bidirectional https://www.padutchdictionary.com/
English https://www.deitshbooks.com/books.html [offl.d]
Pfaelzisch
German https://weinfachberater.der-ultes.de/2009/05/02/paelzisches-woerderbuch-pfaelzisches-woerterbuch/ [offl.w]
German https://bann2000.de/cms3/index.php/baennjer-dialekt/baennjer-woerterbuch (Bann dialect) [offl.w]
Piedmontese
Italian, bidirectional https://www.piemonteis.com/
Italian, bidirectional https://digilander.libero.it/dotor43/indexit.html [offl.w]
Italian, bidirectional http://www.piemunteis.it/dep/dizionario.dep
Polish
Polish https://sjp.pl/
Polish https://sjp.pwn.pl/
Polish https://www.wsjp.pl/
English & German, bidirectional https://www.diki.pl/
Polish https://www.synonimy.pl/ (synonym) [offl.p]
Portuguese
Multiple languages, bidirectional https://www.infopedia.pt/
European languages, bidirectional https://michaelis.uol.com.br/
Portuguese https://dicionario.priberam.org/
Portuguese https://www.aulete.com.br/
Portuguese https://www.dicionarioinformal.com.br/
Portuguese https://www.dicio.com.br/
Portuguese https://www.estraviz.org/
Portuguese https://www.lexico.pt/
Pushto
Multiple languages, partly bidirectional https://qamosona.com/j/
English, bidirectional https://thepashto.com/ [offl.p]
English https://www.yorku.ca/twainweb/troberts/pashto/pashlex1.html [offl.w]
Quechua
European languages, bidirectional http://www.quechuadictionary.org/
Réunion Creole French
French, bidirectional https://www.creole.org/dictionnaire_creole.htm
Romagnol
Italian https://www.expina.it/dizionario.asp [offl.w]
Italian http://marcelpachiot.altervista.org/Dialetto/vocabolario_parlante.htm [offl.w]
Italian http://www.piadinaonline.com/piadinaonline/dizionario.htm [offl.w]
Romanian
English, bidirectional http://dictionare.com/
Romany
Norwegian & English https://tekstlab.uio.no/nro/htdocs/index.php
English https://www.geocities.ws/copperphantom/romdict.html [offl.w]
Russian
Multiple languages, bidirectional https://classes.ru/
Multiple languages, bidirectional https://dic.academic.ru/
Multiple languages, bidirectional https://gufo.me/
European languages https://en.openrussian.org/ [offl.db PL]
Russian languages https://altaica.ru/v-turks.php [offl.d]
Russian https://slovar.cc/
Russian http://gramota.ru/slovari/
English, bidirectional https://wooordhunt.ru/
English https://www.russiandict.net/
English http://russian.dmll.cornell.edu/rdt/
Erzya http://erzan.ru/news/russko-erzyanskii-slovar [offl.w]
Erzya http://lazalyk.narod.ru/business.html [offl.w]
Kalmyk http://xn--80ad0ammb6f.xn--80aaib1bgj2bw2a2c.xn--p1ai/
Karachay-Balkar https://karachai.ucoz.ru/publ/kb_jaz/slovari/russko_karachaevo_balkarskij_slovar_mini_versija/3-1-0-2 [offl.w]
Karelian http://elibrary.krc.karelia.ru/401/ [offl.d]
Khakas https://dict.khakbooks.ru/entries
Moksha https://paevo.ucoz.ru/index/russko_mokshanskij_slovar/0-193, https://paevo.ucoz.ru/index/russko_mokshanskij_slovar_s/0-195 [offl.w]
Nogai http://nogay.ru/ [offl.w]
Southern Altai http://ded-altai.ru/history/russko-altayskiy-slovar [offl.w]
Udmurt http://udmurtinfo.ru/russko-udmurtskij-slovar/
Veps http://elibrary.krc.karelia.ru/469/ [offl.d]
Russian https://bigenc.ru/ (encyclopaedia)
Russian http://www.sokr.ru/ (abbreviation)
Samoan
English, bidirectional http://nzetc.victoria.ac.nz/tm/scholarly/tei-PraDict.html [offl.w PL]
English https://samoan.ws/word/ [offl.w]
Sardinian
European languages http://ditzionariu.sardegnacultura.it/
Italian http://vocabolariocasu.isresardegna.it/
Italian http://www.amoscardia.com/pubblicazioni/articolo.php?id=40 [offl.d]
Italian http://www.sardopoli.com/dizionario.htm [offl.w]
Saterfriesisch
German, bidirectional https://www.oostfreeske-taal.de/buurman/
Scottish Gaelic
English https://learngaelic.scot/dictionary/
English https://www.faclair.com/
English http://www.ceantar.org/Dicts/MF2/index.html [offl.w PD]
English http://www.ceantar.org/Dicts/MB2/index.html (etymology) [offl.w]
Sea Island Creole English
English https://gullahtours.com/gullah/gullah-words [offl.w]
Serbo-Croatian
Bosnian
English, bidirectional http://www.ba.rjecnik.com/
Croatian
German & English, bidirectional https://crodict.de/
Croatian http://hjp.znanje.hr/
Dalmatian https://www.dalmapedia.org/wiki/Kategorija:Rje%C4%8Dnik_hrvatski
Dutch http://www.natalihr.nl/woordenboek/index_hr.html [offl.w]
English, bidirectional http://www.englesko.hrvatski-rjecnik.com/
English, bidirectional http://www.rjecnik.net/
Croatian https://kastavstarigrad.com/rjecnik/ (Kastav dialect)
Serbian
English, bidirectional http://www.recnik.com/
Serbian https://www.vokabular.org/
Shor
Russian, bidirectional https://tili.tadarlar.ru/uchebnaya/slovar [offl.w]
Russian http://shor-tili.info/
Shwe Palaung
English https://github.com/aungkoman/shwe_dictionary [offl.db]
Silesian
German http://www.kmosler.de/Sprache/Woerterlisten/OS-Woerter.html
Polish https://www.antryj.pl/slownik
Polish https://www.isibrno.cz/~malczyk/slownik.htm
Polish http://www.interklasa.pl/portal/dokumenty/r023/slownik%20gwary.htm
Polish http://www.slownikslaski.pl/
Polish http://www.turybnik.pl/mojesmaki/SLOWNIK_GWARY_SLASKIEJ.htm
Sindarin
European languages https://www.jrrvf.com/hisweloke/sindar/online/sindarin.html
English, bidirectional http://sindarinlessons.weebly.com/ [offl.d]
Sinhala
English, bidirectional https://freidea.org/
English, bidirectional https://maduraonline.com/
Slovak
European languages, bidirectional https://slovnik.aktuality.sk/
European languages, bidirectional https://webslovnik.zoznam.sk/
Slovak https://slovnik.juls.savba.sk/
Slovak http://www.slex.sk/index.asp
Russian http://slovnik.org/
Slovene
Slovene https://fran.si/
Southern Altai
Russian https://kalayda.ru/altaysko-russky-slovar
Russian http://altai-mountains.ru/articles/dictionary/altrusdic/?idnews=3336 [offl.w]
Southern Nambikuára
Portuguese, bidirectional https://www.sil.org/resources/archives/17018 [offl.d]
Spanish
Multiple languages, bidirectional https://aulex.org/
Spanish & English, bidirectional https://servicios.elpais.com/diccionarios/
Spanish https://dem.colmex.mx/
Spanish https://dle.rae.es/
Spanish http://clave.smdiccionarios.com/app.php
Aragonese https://aragonario.aragon.es/
English https://www.spanishdict.com/
Esperanto https://www.esperanto.es/hef/index.php/diccionario-esperanto
Extremaduran https://izio.jimdofree.com/descarga-gratis-dicionariu/ [offl.w]
Exdremaduran https://oscecestremaura.wordpress.com/pubricacionis/ [offl.d]
Swabian
German https://www.schwabenbraeu.de/schwaebisch-lexikon.html [offl.w]
German http://schwaebisches-woerterbuch.de/
Swahili
English https://africanlanguages.com/swahili/index.php
English https://www.swahilipod101.com/swahili-dictionary/
Swedish
Multiple languages https://lexin.nada.kth.se/lexin/
European languages, bidirectional https://www.synonymer.se/
Swedish https://svenska.se/
Danish https://sdo.dsl.dk/
English, bidirectional http://folkets-lexikon.csc.kth.se/folkets/
English https://ne.ord.se/
Swedish https://antonym.se/ (antonym)
Swedish https://sok.riksarkivet.se/sbl/Start.aspx (biography)
Swedish http://runeberg.org/svetym/ (etymology)
Swiss German
German https://www.auswandern-schweiz.net/schweizer-kultur/schweizerdeutsch-woerterbuch [offl.w]
German https://www.dialektwoerter.ch/ch/a.html [offl.w]
German https://www.idiotikon.ch/
German https://www.schweizerdeutsch-lernen.ch/blog/schweizerdeutsch-woerterbuch/
German http://gaby-paul.freepage.de/woerterbu.htm [offl.w]
Tagalog
English, bidirectional http://tagalogcube.com/
English https://www.tagaloglang.com/dictionary/
English https://www.tagaloglessons.com/dictionary/
English https://www.tagalog-dictionary.com/
Taiwan Sign Language
Mandarin Chinese & English, bidirectional http://tsl.ccu.edu.tw/web/index.php
Talosan
English http://talossan.com/wp-content/uploads/2014/08/treisour.htm [offl.w]
Tamil
Tamil https://rprabhu.github.io/TamilDictionary/
English, bidirectional http://dictionary.tamilcube.com/
English http://ccat.sas.upenn.edu/plc/tamilweb/tamilenglish.html [offl.w]
Tatar
Russian, bidirectional https://tatpoisk.net/
Thai
English, bidirectional https://www.thai2english.com/thai-dictionary-designed-for-learners-of-thai
English, bidirectional https://english-thai-dictionary.com/
English, bidirectional https://lexitron.nectec.or.th/2009_1/
English http://www.thai-language.com/dict
Mandarin Chinese, bidirectional http://www.dict2u.com/index.php?option=com_seoglossary&view=glossaries&catid=1&ordering=tterm&direction=desc&theme=responsive&show_grid_image=1&Itemid=167&lang=th
Mandarin Chinese, bidirectional http://zhongtai.org/
English, bidirectional https://www.tipitaka.org/thai-dict (Buddhism)
Tibetan
English, bidirectional https://dictionary.christian-steinert.de/#home
English, bidirectional https://play.google.com/store/apps/details?id=org.lobsangmonlam.dictionary [offl.p]
English http://rywiki.tsadra.org/index.php/Main_Page [PL]
English http://www.digitalhimalaya.com/collections/rarebooks/ [offl.d PL]
Tigrinya
European languages, bidirectional https://www.geezexperience.com/
Tok Pisin
English, bidirectional https://www.tok-pisin.com/ [offl.w PL]
English https://amor.cms.hu-berlin.de/~h2816i3x/Lehre/2007_HS_TokPisin/TokPisinTexte/English-TokPisin-Dictionary.html [offl.w]
English https://www.tokpisin.info/
Trinidadian Creole English
English https://cguillaumme.caribsurf.net/dictionary.html [offl.w]
English https://en.wiktionary.org/wiki/Appendix:Glossary_of_Trinidadian_English [offl.w]
Tsonga
English, bidirectional https://www.xitsonga.org/dictionary [offl.w]
Turkish
Turkish https://sozluk.gov.tr/
English, bidirectional https://www.seslisozluk.net/ [offl.p]
English, bidirectional http://www.turkishdictionary.net/
English, bidirectional http://www.zargan.com/
Turkmen
Turkmen https://enedilim.com/sozluk
Tuvan
Russian, bidirectional https://tyvan.ru/
Uighur
English https://cedar.wwu.edu/easpress/30/ [offl.d]
Ukrainian
Ukrainian https://slovnyk.ua/
English https://www.ukrainianlanguage.org.uk/read/reference/dictionary.htm [offl.w]
Upper Sorbian
German https://www.soblex.de/
Urdu
English, bidirectional https://www.urduenglishdictionary.org/
English, bidirectional https://www.urduinc.com/
English, bidirectional https://www.urdupoint.com/dictionary/
English https://www.rekhta.org/urdudictionary/
Uzbek
English https://ctild.sitehost.iu.edu/Main/Uzbek-EnglishDictionary
English http://zangorikema.com/
English https://ctild.indiana.edu/TashkentDialectDictionary/TashkentDialectDictionary (Tashkent dialect) [offl.w]
Venetian
Italian https://venicewiki.org/wiki/Parole_in_dialetto_veneziano [offl.w]
Italian http://www.linguaveneta.net/strumenti/dizionari/ [offl.d]
Vietnamese
(duplicated vie-1) Multiple languages, bidirectional https://vdict.com/
European languages, bidirectional https://www.informatik.uni-leipzig.de/~duc/Dict/ [offl.db/p PL]
English http://www.denisowski.org/Vietnamese/vnedict_readme.htm [offl.d]
English https://www.chunom.org/ (Chu Nom) [offl.db]
Virgin Islands Creole English
English https://cruciandictionary.com/cruzandictionary/a.html [offl.w]
English https://www.yellowpigs.net/virginislands/language/index [offl.d]
Vlaamse Gebarentaal
Dutch https://woordenboek.vlaamsegebarentaal.be/
Volapük
English, bidirectional https://xn--volapk-7ya.com/ [offl.d]
Wallon
French http://chanae.walon.org/lh/wa/dic/index.php
Welsh
English, bidirectional https://geiriadur.uwtsd.ac.uk/
English https://en.wikisource.org/wiki/A_pocket_dictionary,_Welsh-English [offl.w PD]
Western Frisian
Dutch, bidirectional https://taalweb.frl/wurdboekportaal
Dutch, bidirectional http://www.wurdboek.nl/v2/index.php
Dutch http://www.frysk-wurdboek.nl/links.html [offl.d]
Yakut
Russian & English, partly bidirectional https://sakhatyla.ru/
English http://home.uchicago.edu/~straughn/Christopher_Straughn/Christopher_Straughn.html [offl.d]
Yiddish
English https://thomer.com/yiddish/ [offl.w]
English https://www.cs.uky.edu/~raphael/yiddish/dictionary.cgi
English http://www.yiddishdictionaryonline.com/
Yoruba
Yoruba https://www.yorubaword.com/
Zari
English & Hausa, bidirectional http://llacan.vjf.cnrs.fr/PDF/Publications/Caron/Zaar/ [offl.d]
Zulu
English, bidirectional https://isizulu.net/
Uncoded languages
(uncoded in ISO 639-3)
Folksprak
English https://folksprak.org/?target=dictionary [offl.w]
Glosa
Multiple languages, bidirectional http://www.glosa.org/gid/index.html [offl.db/w]
Interslavic
European languages https://interslavic-dictionary.com/
Lingwa de Planeta
European languages, partly bidirectional http://www.lingwadeplaneta.info/en/grammar.shtml [offl.d]
Loglan
English, bidirectional http://www.loglan.org/#materials [offl.d]
Romániço
English, bidirectional http://romaniczo.com/en_vocabulados.html [offl.w]
Romanid
Hungarian http://romanid.nyelv.info/downloads.html [offl.d]
Sambahsa
English http://sambahsa.pbworks.com/w/file/117418377/sambahsa-english.txt [offl.w]
Slovio
English https://www.slovio.com/
Trigedasleng
English https://trigedasleng.net/ [offl.d]
Unish
Multiple languages http://www.unish.net/search/unish_Dic_Search.jsp [offl.w]
Dictionaries with same database
The first link of each database is the source of it, if its source is publicly available.
BEOLINGUS
CC-Canto
- https://www.cccanto.org/ [offl.db PL]
- https://github.com/aaronhktan/jyut-dict [offl.p PL]
- https://www.pleco.com/ [offl.p]
CC-CEDICT
- https://www.mdbg.net/chinese/dictionary [offl.db PL]
- https://addons.mozilla.org/en-US/firefox/addon/liuchan/ [offl.p]
- https://addons.mozilla.org/en-US/firefox/addon/perapera-chinese/ [offl.p]
- https://chrome.google.com/webstore/detail/liuchan-chinese-popup-dic/hjpjmkjmkgedphipmbnmejlnfndjcgdf [offl.p]
- https://eudict.com/
- https://github.com/aaronhktan/jyut-dict [offl.p PL]
- https://github.com/cschiller/zhongwen [offl.p]
- https://syngdict.com/ [offl.p]
- https://www.archchinese.com/chinese_english_dictionary.html
- https://www.chinese-tools.com/tools/dictionary.html [offl.p]
- https://www.moedict.tw/%E8%90%8C [API]
- https://www.pleco.com/ [offl.p]
CFDICT
- https://chine.in/mandarin/dictionnaire/ [offl.p/db PL]
- https://www.moedict.tw/%E8%90%8C [API]
- https://www.pleco.com/ [offl.p]
Dizionario Della Lingua Italiana
ECDICT
- https://github.com/skywind3000/ECDICT [offl.db PL]
- https://github.com/program-in-chinese/webextension_english_chinese_dictionary [offl.p]
English-Pali Dictionary (Metta Net)
- http://dhamma.sutta.org/pali-course/Pali-Chinese-English%20Dictionary.html [offl.p PL]
- https://www.budsas.org/ebud/dict-ep/ [offl.w]
ESPDIC
- http://www.denisowski.org/Esperanto/Esperanto.html [offl.db PL]
- https://bitbucket.org/eklegu/eklegu/ [PL]
FreeDict
Grande Dizionario Italiano
HanDeDict
- https://handedict.zydeo.net/de/ [offl.db PL]
- https://www.moedict.tw/%E8%90%8C [API]
- https://www.pleco.com/ [offl.db]
- http://www.handedict.de/ [offl.db]
Inglise-eesti sõnastik (Eesti Keele Instituut)
- https://portaal.eki.ee/dict/ies/
- https://enet.animato.ee/index.php
- https://nastik.palat.ee/index.php
JMdict
- http://nihongo.monash.edu/cgi-bin/wwwjdic [offl.db PL]
- https://addons.mozilla.org/en-US/firefox/addon/nazeka/ [offl.p PL]
- https://addons.mozilla.org/en-US/firefox/addon/rikaichamp/ [offl.p PL]
- https://addons.opera.com/en/extensions/details/rikaikun/ [offl.p PL]
- https://apps.apple.com/us/app/safarikai/id1437951175 [offl.p PL]
- https://chrome.google.com/webstore/detail/rikaikun/jipdnfibhldikgcjhfnomkfpcebammhp [offl.p]
- https://eudict.com/
- https://foosoft.net/projects/yomichan/ [offl.p PL]
- https://jisho.org/
- https://jlearn.net/
- https://nani.lepiller.eu/ [offl.p PL]
- https://nihongo.io/
- https://tangorin.com/
- https://wadoku.de/
- https://www.japandict.com/
- https://www.japaneseapp.com/ [offl.p]
- https://www.jlect.com/
- https://www.tagaini.net/
- http://dico.fj.free.fr/traduction/index.php
- http://romajidesu.com/
- http://takoboto.jp/ [offl.p]
- http://zkanji.sourceforge.net/ [offl.p PL]
kengdic
- https://github.com/garfieldnate/kengdic [offl.db PL]
- https://www.toktogi.com/ [offl.p]
Ornagai
Reta Vortaro
- http://www.reta-vortaro.de/revo/ [offl.db/d PL]
- https://www.busydoingnothing.co.uk/prevo/ [offl.p PL]
- https://www.tujavortaro.net/ [PL]
Wiktionary
- https://www.wiktionary.org/ [API offl.db PL]
- https://gitlab.com/cmu_ariel/tok_pisin_dictionary [offl.db]
- https://thesaurus.altervista.org/dictionary [offl.p]
- https://www.kiwix.org/ [offl.p PL]
- http://aarddict.org/ [offl.p PL]
- http://www.okawix.com/ [offl.p PL]
- http://xowa.org/home/wiki/Help/Download_XOWA.html [offl.p PL]
WordNet
Большой энциклопедический словарь
Орфографический словарь Лопатина
Словарь русских синонимов и сходных по смыслу выражений (Абрамова)
Словник української мови
Толковый словарь живого великорусского языка (Даля)
Толковый словарь русского языка (Ожегова)
Толковый словарь русского языка (Ушакова)
لسان العرب
표준국어대사전
- https://stdict.korean.go.kr/main/main.do [API PL]
- https://krdict.korean.go.kr/mainAction [API PL]
- https://opendict.korean.go.kr/main [API PL]
한국어기초사전
- https://krdict.korean.go.kr/mainAction [API PL]
- https://play.google.com/store/apps/details?id=com.schurawel.kl_dictionary
デジタル大辞泉
大辞林
巴利三藏电子辞典 Pali Canon E-Dictionary
- http://dhamma.sutta.org/pali-course/Pali-Chinese-English%20Dictionary.html [offl.p PL]
- https://dictionary.online-dhamma.net/
- http://dictionary.sutta.org/
重編國語辭典修訂本
- http://dict.revised.moe.edu.tw/cbdic/ [offl.db PL]
- https://www.chinese-tools.com/tools/dictionary.html
- https://www.moedict.tw/%E8%90%8C [API]
臺灣客家語常用詞辭典
- https://hakkadict.moe.edu.tw/cgi-bin/gs32/gsweb.cgi/login?o=dwebmge [PL]
- https://www.moedict.tw/:%E7%99%BC%E8%8A%BD [API]
臺灣閩南語常用詞辭典
Q&A
Q: How many words does a dictionary have?
A: Find some random words with different frequency levels (for example top 1000, 5000, 10000, 50000), according to the lists on Wiktionary or somewhere else. Then you can test it.
Q: How to evaluate a dictionary?
A: Find a random word and search in the dictionary, then ignore the headword, just see the entry and see how many headwords you can come up with. If you can always recall one word, that means the dictionary is very precise. If it's one-one projection, it may cause big misunderstandings because words are usually don't have exactly corresponding word senses. Part-of-speech is essential. But being precise is not the only thing to care about. The entry should be brief, too. You couldn't expect a hobbyist dictionary to reach this high quality, but a satisfying level.
Q: Can a translator serve as a dictionary?
A: See if the translator returns multiple results. If it only returns one result for a word, it can't meet your demand sometimes.
Q: What other aspects should I consider?
A: First, privacy and security. HTTP is less secure than HTTPS. If you have uMatrix installed, you can see how many third-parties a website contains. For apps, check their permissions. You can make use of Exodus Privacy to see trackers and permissions of an app. Second, see if it is licensed under any public copyright license. This kind of license makes sure that anyone can access it and do something with it without worry about potential copyright issues (whether a use is a fair use or not), so it can be easily reproduced and widely spread. The most successful case being JMdict. Third, see if it is actively updated. A discontinued dictionary may contain more mistakes. An important factor for an actively updated dictionary is a community, which may requires public copyright licenses so that people are willing to contribute to it.