/ Dictionary / Index N nonbeliever: Meaning and Definition of Find definitions for: non•be•liev•er Pronunciation: (non"bi-lē'vur), [key] — n. a person who lacks belief or faith, as in God, a religion, an idea, or an undertaking. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: nonbeliever (Thesaurus) nonbearing nonbelligerency Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language