/ Dictionary / Index D dead-on: Meaning and Definition of Find definitions for: dead-on Pronunciation: (ded'on', -ôn'), [key] — adj. Informal. exactly right, accurate, or pertinent: The film director has a dead-on feel for characterization. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: dead-on (Thesaurus) dead nettle deadpan Related Content Daily Word Quiz: exemplary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language