动词轻声低语，咕哝地抱怨( mutter的现在分词 )

1. 嗫语：mutitas surdorum 聋哑症 | muttering 嗫语 | mutual 相互的

2. 喃喃自语：firebrand 煽动者 | muttering 喃喃自语 | afoul of 与......相碰撞

noun

1. a complaint uttered in a low and indistinct tone

Synonym: grumblegrumblingmurmurmurmuringmutter

2. a low continuous indistinct sound
often accompanied by movement of the lips without the production of articulate speech

Synonym: muttermurmurmurmuringmurmurationmussitation