| prescient | Foreknowing. |
| prescript | Prescribed as a rule or model. |
| prescriptible | Derived from authoritative direction. |
| prescription | An authoritative direction. |
| presentient | Perceiving or feeling beforehand. |
| presentiment | Foreboding. |
| presentment | Semblance. |
| preservation | Conservation. |
| presumption | That which may be logically assumed to be true until disproved. |
| presumptuous | Assuming too much. |
| pretension | A bold or presumptuous assertion. |
| pretentious | Marked by pretense, conceit, or display. |
| preternatural | Extraordinary. |
| pretext | A fictitious reason or motive. |
| prevalence | Frequency. |
| prevalent | Of wide extent or frequent occurrence. |
| prevaricate | To use ambiguous or evasive language for the purpose of deceiving or diverting attention. |
| prevention | Thwarting. |
| prickle | To puncture slightly with fine, sharp points. |
| priggish | Conceited. |
| prim | Stiffly proper. |
| prima | First. |
| primer | An elementary reading-book for children. |
| primeval | Belonging to the first ages. |
| primitive | Pertaining to the beginning or early times. |
| principal | Most important. |
| principality | The territory of a reigning prince. |
| principle | A general truth or proposition. |
| priory | A monastic house. |
| pristine | Primitive. |
| privateer | A vessel owned and officered by private persons, but carrying on maritime war. |
| privilege | A right or immunity not enjoyed by all, or that may be enjoyed only under special conditions. |
| privity | Knowledge shared with another or others regarding a private matter. |
| privy | Participating with another or others in the knowledge of a secret transaction. |
| probate | Relating to making proof, as of a will. |
| probation | Any proceeding designed to ascertain or test character, qualification, or the like. |
| probe | To search through and through. |
| probity | Virtue or integrity tested and confirmed. |
| procedure | A manner or method of acting. |
| proceed | To renew motion or action, as after rest or interruption. |
| proclamation | Any announcement made in a public manner. |
| procrastinate | To put off till tomorrow or till a future time. |
| procrastination | Delay. |
| proctor | An agent acting for another. |
| prodigal | One wasteful or extravagant, especially in the use of money or property. |
| prodigious | Immense. |
| prodigy | A person or thing of very remarkable gifts or qualities. |
| productive | Yielding in abundance. |
| profession | Any calling or occupation involving special mental or other special disciplines. |
| professor | A public teacher of the highest grade in a university or college. |