/ Dictionary / Index D dufus: Meaning and Definition of Find definitions for: du•fus Pronunciation: (d'fus), [key] — pl. -fus•es. doofus. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Du Fu Dufy 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