Why: the wizards in my serial fiction speak an unchanging logical language that I call Rational, but I'm representing as just plain Latin. I'm not so foolish as to have long passages of a language I don't speak (nor do my readers, generally), but the occasional word creeps in and I don't want to look silly. Just as I wouldn't write about horses without checking and double-checking my facts, I was hoping to double check my pseudo-translation. I have actually started some books on learning the language, but for what I have now, I'd prefer to ask a passable expert.

How much: I have exactly three full (three-word) sentences in two hundred pages of writing, and I intend to continue at about that density. In addition, there are people's names (wizards are named by their teachers, and the names are attributes or descriptions - which I know was not the Roman way).

As an example (again, one of three), when a character is freed from years of imprisonment, he screams "Libertas! Liberatus sum!" before switching back to the language of people around him.

If you have a few spare minutes to help out, I'd greatly appreciate not having to trust google translate and my Idiot's Guide To Learning Latin.

Someone at Google Translate was being a wit, tho... their somewhat strange translation, in English rhyming and word order (which tells me it's a preset result), of a bit of doggerel I learned from my high school Latin teacher:

Latina lingua mortua
jacentem in pulvere
prius occiderat Romani
Sed nos occideres

[And it doesn't backtranslate correctly.]