/ Dictionary / Index D disconfirm: Meaning and Definition of Find definitions for: dis•con•firm Pronunciation: (dis"kun-fûrm'), [key] — v.t. to prove to be invalid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. disconcert disconformable Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language