Questionable

Antonyms of QUESTIONABLE

distinct, earthly, Questionless, open-and-shut, unproblematic, unquestionable, undisputed, undoubted, lucid, manifest, undebatable, incontrovertible, mathematical, unambiguous, evident, obvious, definite, proven, Indubious, potential, unequivocal, possible, uncontested, indisputable, unquestioned, hands down, clear, trusty, settled, trustworthy, sure, imaginable, plain, perspicuous, certain.