/ Dictionary / Index U unheard: Meaning and Definition of Find definitions for: un•heard Pronunciation: (un-hûrd'), [key] — adj. not heard; not perceived by the ear. not given a hearing or audience. unheard-of. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: unheard (Thesaurus) unhealthy unheard-of 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