/ Dictionary / Index P popoff: Meaning and Definition of Find definitions for: pop•off Pronunciation: (pop'ôf", -of"), [key] — Slang. Slang. —n. a person who generally speaks loudly or irately; indiscreet arguer or complainer. —adj. pertaining to or characteristic of such a person: His popoff remarks cost him many friends. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Popocatepetl pop-out Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language