/ Dictionary / Index D derring-do: Meaning and Definition of Find definitions for: der•ring-do Pronunciation: (der'ing-d'), [key] — n. daring deeds; heroic daring. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: derring-do (Thesaurus) derrière derringer Related Content Daily Word Quiz: diaphanous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language