MUTTER Meaning of MUTTER in English mutter, M~ BrE AmE ˈmʌt ə AmE ˈmʌt̬ ə r▷ mutter|ed d▷ muttering/ly ˈmʌt‿ ə r ɪŋ /li AmE \ ˈmʌt̬ ə r ɪŋ /li ⇨ˈmʌtr ɪŋ /li ▷ mutter|s z Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012