/ Dictionary / Index U unbelief: Meaning and Definition of Find definitions for: un•be•lief Pronunciation: (un"bi-lēf'), [key] — n. the state or quality of not believing; incredulity or skepticism, esp. in matters of doctrine or religious faith. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: unbelief (Thesaurus) unbeknown unbelievable Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language