muttering
名词 muttering:
a low continuous indistinct sound; often accompanied by movement of the lips without the production of articulate speech
同义词:mutter, murmur, murmuring, murmuration, mussitation
a complaint uttered in a low and indistinct tone
同义词:grumble, grumbling, murmur, murmuring, mutter
动词 mutter:
talk indistinctly; usually in a low voice
同义词:mumble, mutter, maunder, mussitate
make complaining remarks or noises under one's breath
同义词:murmur, mutter, grumble, croak, gnarl