INVESTIGATIVE Meaning of INVESTIGATIVE in English investigative BrE AmE ɪn ˈvest ɪɡ ət ɪv -ˈ•əɡ-; -ɪ ɡeɪt ɪv, -ə•• AmE \ -ə ɡeɪt̬ ɪv Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012