a barely audible utterance, especially one expressing dissatisfaction or irritation:a little mutter of disgust
ზმნა
Universal
say something in a low or barely audible voice, especially in dissatisfaction or irritation: [with object]:he muttered something under his breath [with direct speech]:‘I knew she was a troublemaker,’ Rebecca muttered
[no object] talk or grumble in secret or in private:back-benchers were muttering about the next reshuffle