/ Dictionary / Index U unsell: Meaning and Definition of Find definitions for: un•sell Pronunciation: (un-sel'), [key] — -sold, -sell•ing. to dissuade from a belief in the desirability, value, wisdom, or truth of something: He tried to unsell the public on its faith in rearmament. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. unselfish Unser Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language