academical Antonyms

undisputed unanswerable true tangible sure solid self-evident real proven pronounced positive physical undisputable unequivocal uncontested unchallengeable confirmed watertight unassailable beyond a doubt veritable verifiable valid unquestioned unquestionable persuasive patent known concrete certain categorical bodily authoritative authentic assured apparent actual accurate accomplished definite demonstrable irrefutable irrefragable infallible indisputable incontrovertible incontestable guaranteed genuine factual