translation latin - GB or PT

please,

I'm writing a book with some Latin words and I've two questions that I can't solve:

1. "latinistater" , means "poor talker of Latin"?

if not, could you give me the right word in Latin? (in another forum, have given a solution of "latinistaster",  but, not conclusive

2.“fūtuere them in nomine ...”, could you correct my semi-Latin to match this phrase "F*** them in the name of the ..."?

I'll appreciate some help

thank you