| A | B |
| PRIMUS | <L. "first" |
| premier | first in time or importance |
| premier2 | a prime minister or head of state2 |
| primate | an archbishop or bishop who ranks highest among others |
| primate2 | a member of the order of animals that includes monkeys, apes, and humans2 |
| prime | first in rank, excellence, quality, importance, or time |
| prime2 | chief; most important2 |
| prime3 | to prepare something or someone for use or action3 |
| primeval | belonging to the first ages; ancient |
| primordial | primeval; original; fundamental |
| POST | <L. "after" |
| posterior | qsituadted behind or at the back |
| posterity | future generations |
| posterity2 | a person's descendants2 |
| posthumous | occurring or continuing after death, especially a work published after the author's death or a child born after the father's death |