Adjective unquestionable has 3 senses
- unquestionable - impossible to question; "unquestionable authority"
Antonyms: questionable, alleged, so-called, supposed, apocryphal, debatable, problematic, problematical, doubtful, dubious, dubitable, in question, equivocal, fishy, funny, queer, shady, suspect, suspicious, impugnable, self-styled, soi-disant
- authentic, bona fide, unquestionable, veritable - not counterfeit or copied; "an authentic signature"; "a bona fide manuscript"; "an unquestionable antique"; "photographs taken in a veritable bull ring"
Antonyms: counterfeit, imitative (indirect, via genuine)
- unquestionable - not open to question; "an unquestionable (or unequivocal) loss of prestige"
Antonyms: equivocal, ambiguous (indirect, via unequivocal)
,