- polyhedron: A solid bounded by plane faces, especially by more than four.
- polysyllable: Having several syllables, especially more than three syllables.
- polytechnic: Pertaining to, embracing, or practicing many arts.
- polytheism: The doctrine or belief that there are more gods than one.
- pommel: To beat with something thick or bulky.
- pomposity: The quality of being marked by an assumed stateliness and impressiveness of manner.
- pompous: Marked by an assumed stateliness and impressiveness of manner.
- ponder: To meditate or reflect upon.
- ponderous: Unusually weighty or forcible.
- pontiff: The Pope.
- populace: The common people.
- populous: Containing many inhabitants, especially in proportion to the territory.
- portend: To indicate as being about to happen, especially by previous signs.
- portent: Anything that indicates what is to happen.
- portfolio: A portable case for holding writing-materials, drawings, etc.
- posit: To present in an orderly manner.
- position: The manner in which a thing is placed.
- positive: Free from doubt or hesitation.
- posse: A force of men.
- possess: To own.
- possession: The having, holding, or detention of property in one's power or command.
- possessive: Pertaining to the having, holding, or detention of property in one's power or command.
- possessor: One who owns, enjoys, or controls anything, as property.
- possible: Being not beyond the reach of power natural, moral, or supernatural.
- postdate: To make the date of any writing later than the real date.
- posterior: The hinder part.
- postgraduate: Pertaining to studies that are pursued after receiving a degree.
- postscript: Something added to a letter after the writer's signature.
- potency: Power.
- potent: Physically powerful.
- potentate: One possessed of great power or sway.
- potential: Anything that may be possible.
- potion: A dose of liquid medicine.
- powerless: Impotent.
- practicable: Feasible.
- prate: To talk about vainly or foolishly.
- prattle: To utter in simple or childish talk.
- preamble: A statement introductory to and explanatory of what follows.
- precarious: Perilous.
- precaution: A provision made in advance for some possible emergency or danger.
- precede: To happen first.
- precedence: Priority in place, time, or rank.
- precedent: An instance that may serve as a guide or basis for a rule.
- precedential: Of the nature of an instance that may serve as a guide or basis for a rule.
- precession: The act of going forward.
- precipice: A high and very steep or approximately vertical cliff.
- precipitant: Moving onward quickly and heedlessly.
- precipitate: To force forward prematurely.
- precise: Exact.
- precision: Accuracy of limitation, definition, or adjustment.