mutter
noun
- 1
a complaint uttered in a low and indistinct tone
- 2
a low continuous indistinct sound; often accompanied by movement of the lips without the production of articulate speech
verb
- 1
make complaining remarks or noises under one's breath
she grumbles when she feels overworked
- 2
talk indistinctly; usually in a low voice
Also useful for “mutter”:Unscrambler— Rearrange the letters in “mutter”