/ Thesaurus / D Synonyms of disbeliever Find synonyms for: Noun1. disbeliever, nonbeliever, unbeliever, nonreligious personusage: someone who refuses to believe (as in a divinity)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: blithesome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language