di·rec·to·ri·al /ˌdaɪrekˈtɔːriəl◂/ adjectiveadj [only before noun] relating to the work of a film or theatre director 导演的 De Niro’s directorial debut 德尼罗的首次执导
directorial• Not bad, for a first directorial effort.• Certainly, he broke the old directorial mould.• In a festival so studded with star directorial names, it was fascinating to discover who was up and who was down.