/ Thesaurus / U Synonyms of undisputable Find synonyms for: Adjective1. incontestable, indisputable, undisputable, undeniable (vs. deniable)usage: not open to question; obviously true; "undeniable guilt"; "indisputable evidence of a witness"WordNet 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