| Term | Definition |
| Premier(adj) | First in time or importance |
| Premier(n) | A prime minister or head of state |
| Primate(1) | An archbishop or bishop who ranks highest among others. |
| Primate(2) | A member of the order of animals that includes monkeys, apes, and humans. |
| Prime(n) | First in rank, excellence, quality, importance, or time. |
| Prime(adj) | Cheif; most important |
| Prime(tr. v) | To prepare something or someone for use or action. |
| Primeval | Belonging to the first ages; ancient. |
| Primordial | Primeval; original; fundamental. |
| Posterior | Situated in or behind the back |
| Posterity(1) | Future generations |
| Posterity(2) | A person's descendants. |
| Posthumous | Occurring or continuing after death, especially a work published after the author's death or a child born after the father's death. |