to speak or say something in a quiet voice, especially because you are annoyed about something, to make a low, indistinct sound, often as if talking to oneself

mutter darkly, mutter under one's breath, mutter away

Formal and Informal Expressions of mutter

In different contexts, you can replace 'mutter' with suitable alternatives. In a more formal setting, 'murmur' is apt. In informal speech or writing, 'grumble, mumble' is a commonplace synonym.

mutter: Explore its Definition & Usage

mutter Definition

1to speak or say something in a quiet voice, especially because you are annoyed about something
2to make a low, indistinct sound, often as if talking to oneself

Using mutter: Examples

Take a moment to familiarize yourself with how "mutter" can be used in various situations through the following examples!

Example
She muttered something under her breath and walked away.
Example
He was muttering to himself as he worked on the puzzle.
Example
The old man muttered about the weather and then fell silent.
Example
I could hear him muttering about the traffic outside.

mutter Synonyms and Antonyms

Synonyms for mutter

Phrases with mutter

mutter darkly
to speak in a low voice, indicating anger or disapproval
Example
He muttered darkly about the company's policies and left the room.
mutter under one's breath
to speak in a low voice, often inaudibly, so that others cannot hear what is being said
Example
She muttered under her breath so quietly that I couldn't hear what she was saying.
mutter away
to speak in a low voice for a long time, often without making much sense
Example
He kept muttering away to himself, lost in thought.

Origins of mutter

from Middle Dutch 'moteren', meaning 'to grumble'

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Summary: mutter in Brief

'Mutter' [ˈmʌtər] is a verb that describes speaking or making sounds in a low, indistinct voice, often indicating annoyance or disapproval. It can be used to describe someone speaking to themselves or others, as in 'She muttered something under her breath and walked away.' 'Mutter' also has phrases like 'mutter darkly,' which implies anger, and 'mutter under one's breath,' which means to speak in a low voice so that others cannot hear.