If you mutter, you speak very quietly so that you cannot easily be heard, often because you are complaining about something.
例句
'God knows what's happening in that madman's mind,' she muttered...她咕哝着:“天知道那个疯子在想什么。”She can hear the old woman muttering about consideration...她能听到那个老妇人小声咕哝说考虑考虑。
英英词典释义
Noun
1. a low continuous indistinct sound; often accompanied by movement of the lips without the production of articulate speech
2. a complaint uttered in a low and indistinct tone
Adjective
1. speaking low and indistinctly;
"a mumbling parson stood beside the dying man""muttering crowds of onlookers"