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| Placid | calm; peaceful |
| Plagiarism | taking credit for someone else's writing or ideas |
| Plaintiff | petitioner (in court of law) |
| Plaudit | statement giving strong praise |
| Plausible | can be believed; reasonable |
| Plethora | an excess |
| Pliable | flexible; not stubborn |
| Plumage | feathers of a bird |
| Plummet | fall suddenly and steeply |
| Podium | raised platform |
| Poignant | deeply moving; strongly affecting the emotions |
| Poised | calm; collected; self-possessed |
| Polemical | causing debate or argument |
| Ponderous | weighty; slow and heavy |
| Pontificate | speak pompously or dogmatically |
| Portend | foretell |
| Portent | a warning sign; omen |
| Poseur | someone who puts on an act |
| Posterity | future generations |
| Posthumous | after death |