| Undoubted (a.) Not doubted; not called in question; indubitable; indisputable; as, undoubted proof; undoubted hero. Thesaurus Entries accepted, actual, ascertained, attested, authenticated, believed, beyond question, bona fide, categorically true, certain, certified, confirmed, corroborated, credited, demonstrated, determined, documentary, doubtless, effectual, established, factual, genuine, historical, indubious, indubitable, not in error, objectively true, past dispute, proved, questionless, real, received, substantiated, sure-enough, TRUE, true as gospel, trusted, truthful, unchallenged, unconfuted, uncontested, uncontradicted, uncontroversial, uncontroverted, undenied, undisputed, unerroneous, unfallacious, unfalse, unmistaken, unquestionable, unquestioned, unrefuted, unsuspected, validated, veracious, verified, veritable, very |