PENETRATE—bore, pierce, perforate.
PENETRATION—acuteness, sagacity. (Dullness.)
PEOPLE—nation, persons, folks.
PERCEIVE—note, observe, discern, distinguish.
PERCEPTION—conception, notion, idea.
PERIL—danger, pitfall, snare. (Safety.)
PERMIT—allow, tolerate. (Forbid.)
PERSUADE—allure, entice, prevail upon.
PHYSICAL—corporeal, bodily, material. (Mental.)
PICTURE—engraving, print, representation, illustration, image.