di ‧ rec ‧ to ‧ ri ‧ al /ˌdaɪrekˈtɔːriəl◂/ BrE AmE adjective [only before noun]
relating to the work of a film or theatre director:
De Niro’s directorial debut
di ‧ rec ‧ to ‧ ri ‧ al /ˌdaɪrekˈtɔːriəl◂/ BrE AmE adjective [only before noun]
relating to the work of a film or theatre director:
De Niro’s directorial debut
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012