| Term | Definition |
| Antebellum | Of a period before a war, especially the American Civil War. |
| Antecedent(1) | A thing or event that precedes |
| Antecedent(2) | A noun to which a pronoun refers |
| Anterior | Coming before in position or time |
| Avant-Garde(adj) | Ahead of the times, especially in arts |
| Avant-Garde(n) | A group that is ahead of the times |
| Vanguard(1) | The foremost position in an army or fleet |
| Vanguard(2) | Leaders of a movement, fashion etc. |
| Precept | A command; a rule of conduct |
| Predestination | The belief that what happens in human life has already been determined by a higher power. |
| Pre-empt | To take position of something before anyone else can do so. |
| Premonition | A warning in advance |
| Preposterous | Absurd; contrary to nature or reason |
| Pretentious | Showy; pompous; claiming unjustified distinction |