/ Thesaurus / I Synonyms of infallibility Find synonyms for: Noun1. infallibility, dependability, dependableness, reliability, reliablenessusage: the quality of never making an errorWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. 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