Adjective: unquestionable ,ún'kwes-chu-nu-bul
- Not open to question
"an unquestionable (or unequivocal) loss of prestige"
- Incapable of being questioned
"unquestionable authority"
- Not counterfeit or copied
"an unquestionable antique";
- authentic, bona fide, veritable
See also: acknowledged, beyond doubt, echt, for sure, genuine, incontestable, incontestible, indubitable, mathematical, unambiguous, undeniable, unequivocal, unimpeachable, univocal
Antonym: questionable