| A | B |
| senatus populusque romanus | the senate and the Roman people |
| ab ovo usque ad mala | from eggs all the way up to apples |
| ab urbe condita | From the founding of the city |
| ad astra per aspera | to the stars through hardships |
| ad hoc | to this thing |
| ad hominem | to the man |
| ad libitum | at pleasure |
| Anno Domini | in the year of our lord |
| ante meridiem | before middle of the day |
| post meridiem | after middle of the day |
| ars gratia artis | art for the sake of art |
| ars longa, vita brevis | art is long, life is short |
| ave caesar, nos morituri salutamus | Hail Caesar, we who are about to die salute you |
| bona fide | in good faith |
| carpe diem | seize the day |
| caveat emptor | buyer beware |
| cedant arma toagae | let arms yield to the toga |
| cogito ergo sum | I think therefore I am |
| Cf (confer) | compare |
| cui bono? | who benefites |