MANDATORY Meaning of MANDATORY in English mandator|y BrE AmE ˈmænd ət‿ ə r |i ˈ•ɪt‿, mæn ˈdeɪt ə r |i AmE \ -ə tɔːr |i -toʊr i ▷ mandator|ies iz Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012