OPPORTUNISTIC Meaning of OPPORTUNISTIC in English opportunistic BrE AmE ˌɒp ə tjuː ˈnɪst ɪk ◂ ⇨-tʃuːˈ•- AmE \ ˌɑːp ə r tuː- -tjuːˈ•- ▷ opportunistic|ally ə l‿i Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012