- bona fide - undertaken in good faith; "a bona fide offer"
Antonym: insincere (indirect, via sincere)
- 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)