/ Thesaurus / U Synonyms of uncorroborated Find synonyms for: Adjective1. uncorroborated, unsubstantiated, unsupported (vs. supported)usage: unsupported by other evidenceWordNet 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