/ Thesaurus / U Synonyms of unmistakably Find synonyms for: Adverb1. unmistakablyusage: without possibility of mistake; "this watercolor is unmistakably a synthesis of nature"2. signally, unmistakably, remarkablyusage: in a signal manner; "signally inappropriate methods"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: polyglot Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language