Main entry: unquestionable
Definition: not open to question
Usage: an unquestionable (or unequivocal) loss of prestige
Main entry: bona fide, authentic, unquestionable, veritable
Definition: not counterfeit or copied
Usage: an authentic signature; a bona fide manuscript; an unquestionable antique; photographs taken in a veritable bull ring
Main entry: unquestionable
Definition: incapable of being questioned
Usage: unquestionable authority