/ Dictionary / Index G gaga: Meaning and Definition of Find definitions for: ga•ga Pronunciation: (gä'gä"), [key] — adj. Informal. excessively and foolishly enthusiastic: The public went gaga over the new fashions. ardently fond; infatuated: He's gaga over the new girl in class. demented; crazy; dotty. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: gaga (Thesaurus) gag gagaku Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language