From wordgenius.com, here are Latin phrases that persist: quid pro quo, bona fide, persona non grata, carpe diem, status quo, et cetera, ad hoc, de facto, and vice versa. The language is not dead. I get telestic over q words. Quoque (also), is the favorite, and then there's quattuor (four), quinque (five), plus neque (nor). Pronounce the e as a. There is a friend at church whose name is Quentin. We call him Q.