# mutter

/ˈmətɝ/ (US) · /mˈʌtɐ/ (UK) · CEFR B2 · Noun

Source: https://englishreference.com/word/mutter
Updated: 2026-05-27

## Definition

a low, quiet sound made with your mouth, usually when you are angry or upset. It is like talking to yourself in a way that others cannot hear clearly.

For teachers: a low, indistinct sound made with the lips and tongue, typically expressing irritation or dissatisfaction. Often used to describe the act of speaking in a way that is barely audible to others.

## Examples

- He gave a low mutter of frustration as the door stuck.
- The crowd began a low mutter of discontent as the speaker continued to ignore their questions.
- A low mutter of protest rose from the back of the room, though no one dared to voice their concerns directly to the committee members.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.