/ Thesaurus / U Synonyms of untruthfulness Find synonyms for: Noun1. untruthfulness, dishonestyusage: the quality of being untruthfulWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: entomology Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language