/ Dictionary / Index U unbeliever: Meaning and Definition of Find definitions for: un•be•liev•er Pronunciation: (un"bi-lē'vur), [key] — n. a person who does not believe. a person who does not accept any, or some particular, religious belief. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: unbeliever (Thesaurus) unbelievable unbelieving Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language