/ Dictionary / Index L la-di-da: Meaning and Definition of Find definitions for: la-di-da Pronunciation: (lä'dē-dä'), [key] — Informal. Informal. —interj. (used as an expression of derision directed at affected gentility or pretentious refinement.) —adj. affected; pretentious; foppish: a la-di-da manner. —n. an affected or pretentious person. behavior or speech characterized by affected or exaggerated gentility. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: la-di-da (Thesaurus) laden Ladies Aid Related Content Daily Word Quiz: innocuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language