/ Thesaurus / P Synonyms of papal infallibility Find synonyms for: Noun1. papal infallibility, infallibilityusage: belief of the Roman Catholic Church that God protects the pope from error when he speaks about faith or moralityWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: reticent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language