/ Dictionary / Index D doofus: Meaning and Definition of Find definitions for: doo•fus Pronunciation: (d'fus), [key] — pl. -fus•es. a foolish or inept person. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: doofus (Thesaurus) doo-doo doohickey Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language