/ Dictionary / Index D deaf-and-dumb: Meaning and Definition of Find definitions for: deaf-and-dumb Pronunciation: (def'un-dum'), [key] — adj. Often Offensive. deaf-mute (def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: deaf-and-dumb (Thesaurus) deaf deaf-blind Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language