undoubted synonyms

undoubted

modif.

assured, sure, unquestionable, indubitable, unquestioned, irrefutable, indisputable, undisputed, unchallenged, proved, proven, established, without question, settled, fixed; see also certain.

Antonyms questionable*, disputed, refuted.

Webster's New World Roget's A-Z Thesaurus Copyright © 1999 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.