Here are some Latin words and phrases you should know.
- a posteriori: from the latter (based upon evidence; not existing in the mind prior to or independent of experience)
- a priori: from what comes before (based on deductive reasoning, not empirical evidence; existing in the mind prior to and independent of experience)
- amor vincit omnia: love conquers all
- bona fide: good faith (also: genuine or authentic)
- caveat emptor: buyer beware
- cogito ergo sum: I think therefore I am.
- quid pro quo: one thing in return for the other
For more, I recommend reading Mental Floss’ list of 20 Latin phrases.