/ Dictionary / Index G G.O.P.: Meaning and Definition of Find definitions for: G.O.P. Pronunciation: [key] Grand Old Party (an epithet of the Republican party since 1880). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: gop (Thesaurus) goozle gopak Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language