IMMUTABLE Meaning of IMMUTABLE in English immutab|le BrE AmE ɪ ˈmjuːt əb | ə l ˌɪ-, ˌɪm- AmE \ -ˈmjuːt̬-▷ immutab|ly li Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012