UNALTERABLE Meaning of UNALTERABLE in English unalterab|le BrE AmE ʌn ˈɔːlt‿ ə r əb| ə l ˌʌn-, -ˈɒlt‿ -ˈɑːlt‿ ▷ unalterab|ly li Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012