authentic◼◼◼(of undisputed origin) adjective [UK: ɔː.ˈθen.tɪk] [US: ə.ˈθen.tɪk]This is an authentic Suzhou embroidery. = C'est une authentique broderie de Suzhou.
genuine◼◼◼(real, authentic) adjective [UK: ˈdʒe.njʊɪn] [US: ˈdʒe.njə.wən]It's a genuine question. = C'est une question authentique.
bona fide◼◼◻(done in good faith) adjective [UK: ˈbəʊ.nə.ˈfaɪ.dɪ] [US: ˈbəʊ.nə.ˈfaɪ.dɪ]