doubtable Antonyms

absolute positive sure unanswerable undeniable undoubted unequivocal unquestionable unquestioned unambiguous noncontroversial uncontroversial all wool and a yard wide inarguable unarguable unchallengeable uncontested obvious irrefutable accomplished accurate actual apparent assured certain clear conclusive decisive definite definitive incontestable incontrovertible indisputable indubitable irrefragable undisputed