Language/French/Grammar/Plurals-of-nouns-ending-in-–ou

Plurals of nouns ending in –ou

General Rule

Nouns ending in -ou form their plural with -s.

Examples:

Singular French	Plural French	English
un fou	des fous	madman/men or jester(s)
un trou	des trous	hole(s)

Exceptions

Here are 7 words which form their plural with –x un bijou:

Singular French	Plural French	English
un bijou	des bijoux	jewel(s)
un caillou	des cailloux	stone(s)
un chou	des choux	cabbage(s)
un genou	des genoux	knee(s)
un hibou	des hiboux	owl(s)
un joujou	des joujoux	toy(s)
un pou	des poux	louse(lice)