IMPROMPTU Meaning of IMPROMPTU in English impromptu BrE AmE ɪm ˈprɒm p t juː -ˈprɒm p tʃuː AmE \ -ˈprɑːm p t uː -juː ▷ impromptu|s z Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012