/ Dictionary / Index W whodunit: Meaning and Definition of Find definitions for: who•dun•it Pronunciation: (h-dun'it), [key] — n. Informal. a narrative dealing with a murder or a series of murders and the detection of the criminal; detective story. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: whodunit (Thesaurus) who'd whoe'er Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language