/ Thesaurus / S Synonyms of strong belief Find synonyms for: Noun1. conviction, strong belief, article of faith, beliefusage: an unshakable belief in something without need for proof or evidenceWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: knead Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language