| proffer | To offer to another for acceptance. |
| proficiency | An advanced state of acquirement, as in some knowledge, art, or science. |
| proficient | Possessing ample and ready knowledge or of skill in any art, science, or industry. |
| profile | An outline or contour. |
| profiteer | One who profits. |
| profligacy | Shameless viciousness. |
| profligate | Abandoned to vice. |
| profuse | Produced or displayed in overabundance. |
| progeny | Offspring. |
| progression | A moving forward or proceeding in course. |
| prohibition | A decree or an order forbidding something. |
| prohibitionist | One who favors the prohibition by law of the manufacture and sale of alcoholic beverages. |
| prohibitory | Involving or equivalent to prohibition, especially of the sale of alcoholic beverages. |
| projection | A prominence. |
| proletarian | A person of the lowest or poorest class. |
| prolific | Producing offspring or fruit. |
| prolix | Verbose. |
| prologue | A prefatory statement or explanation to a poem, discourse, or performance. |
| prolong | To extend in time or duration. |
| promenade | To walk for amusement or exercise. |
| prominence | The quality of being noticeable or distinguished. |
| prominent | Conspicuous in position, character, or importance. |
| promiscuous | Brought together without order, distinction, or design (for sex). |
| promissory | Expressing an engagement to pay. |
| promontory | A high point of land extending outward from the coastline into the sea. |
| promoter | A furtherer, forwarder, or encourager. |
| promulgate | To proclaim. |
| propaganda | Any institution or systematic scheme for propagating a doctrine or system. |
| propagate | To spread abroad or from person to person. |
| propel | To drive or urge forward. |
| propellant | Propelling. |
| propeller | One who or that which propels. |
| prophecy | Any prediction or foretelling. |
| prophesy | To predict or foretell, especially under divine inspiration and guidance. |
| propitious | Kindly disposed. |
| proportionate | Being in proportion. |
| propriety | Accordance with recognized usage, custom, or principles. |
| propulsion | A driving onward or forward. |
| prosaic | Unimaginative. |
| proscenium | That part of the stage between the curtain and the orchestra. |
| proscribe | To reject, as a teaching or a practice, with condemnation or denunciation. |
| proscription | Any act of condemnation and rejection from favor and privilege. |
| proselyte | One who has been won over from one religious belief to another. |
| prosody | The science of poetical forms. |
| prospector | One who makes exploration, search, or examination, especially for minerals. |
| prospectus | A paper or pamphlet containing information of a proposed undertaking. |
| prostrate | Lying prone, or with the head to the ground. |
| protagonist | A leader in any enterprise or contest. |
| protection | Preservation from harm, danger, annoyance, or any other evil. |
| protective | Sheltering. |