IMPROBABLE Meaning of IMPROBABLE in English improbab|le BrE AmE ɪm ˈprɒb əb | ə l ˌɪm- AmE \ -ˈprɑːb-▷ improbab|leness ə l nəs -nɪs ▷ improbab|ly li Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012