/ Dictionary / Index P party pooper: Meaning and Definition of Find definitions for: par'ty poop"er Pronunciation: (p'pur), [key] — Slang. Slang. a person who hasn't the interest or vitality to participate actively in a social party and whose mood, attitude, or personality lessens others' enjoyment; killjoy. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. party poop party wall Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language