| Term | Definition |
| phan | to show, appear |
| diaphanous | very sheer and light; almost completely transparent or translucent. |
| phantom | an appearance or illusion without material substance, as a dream image, mirage, or optical illusion. |
| phenomenon | a fact, occurrence, or circumstance observed or observable |
| cellophane | a transparent, paperlike product of viscose, impervious to moisture, germs, etc., used to wrap and package food, tobacco, etc. |
| phe | to say, speak |
| phas | to say, speak |
| prophesy | to foretell or predict. |
| euphemism | the substitution of a mild, indirect, or vague expression for one thought to be offensive, harsh, or blunt. |
| aphasia | the loss of a previously held ability to speak or understand spoken or written language, due to disease or injury of the brain. |
| phren | brain |
| phrenology | a psychological theory or analytical method based on the belief that certain mental faculties and character traits are indicated by the configurations of the skull. |
| schizophrenic | a severe mental disorder characterized by some, but not necessarily all, of the following features: emotional blunting, intellectual deterioration, social isolation, disorganized speech and behavior, delusions, and hallucinations. |
| pleb | people |
| plebiscite | the vote by which the people of a political unit determine autonomy or affiliation with another country. |
| plebeian | belonging or pertaining to the common people. |
| ponder | weight |
| ponder | to consider something deeply and thoroughly; meditate |
| ponderous | of great weight; heavy; massive. |
| preponderant | superior in weight, force, influence, numbers, etc.; prevailing |