- a priori (beforehand, from the former)
- a posteriori (from the latter)
- ab absurdo (from the absurd)
- ab initio (from the beginning)
- ab urbe condita (from the foundation of Rome)
- ad libitum (continuous pleasure)
- alter ego (another I, me as another person)
- busillis (a difficult point, very complicated)
- c’est la guerre (that is war)
- in camera caritatis (in a secret place)
- carpe diem (live day by day)
- cui prodest (who may get advantage of it?)
- deus ex machina (an artificial solution)
- errata corrige (list of errors in a document)
- ex cathedra (from the chair, coming from an important source)
- ex libris (from the library of…)
- in extremis (in extremity, when everybody think it is no more possible, at the last minute)
- in memoriam (into the memory)
- in pectore (in the heart, that is, someone is taking care of)
- in vitro (non-natural process scientific method)
- ipse dixit (said by himself)
- lupus in fabula (when the person you are speaking of, arrives)
- memento mori (remember that you will die)
- motu proprio (on his/her own initiative)
- nec plus ultra (nothing more beyond)
- ultima ratio (last try)
- déjà vu (seen before, a feeling)
- touché (touched, in a sword as well word fight)