Breadcrumb Home > Thesaurus > E Synonyms of effrontery Find synonyms for: Noun1. presumption, presumptuousness, effrontery, assumption, audacity, audaciousnessusage: audacious (even arrogant) behavior that you have no right to; "he despised them for their presumptuousness"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of effrontery (Dictionary) ✖ Related Content Daily Word Quiz: restive Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language