What does mutter mean?
To mutter is to speak in a low voice, usually so that the words are not fully audible or distinct. The verb can describe someone speaking quietly to themselves, muttering an apology or remark, or expressing irritation in a subdued complaint. In these uses, mutter often suggests reluctance, annoyance, or lack of clarity rather than ordinary quiet speech. As a noun, a mutter is a low, indistinct remark, complaint, or murmur, such as a mutter of protest from a group. The word appears frequently in fiction and informal conversation to convey suppressed emotion, especially discomfort, annoyance, or disagreement. It can also be used in descriptions of people speaking without clearly articulating their words, making it useful for showing how a character communicates indirectly or under pressure.
To speak in a low, indistinct voice, especially with words that are difficult to hear or understand; also, to complain or grumble quietly.
"He muttered under his breath as he continued reading."
Common in informal speech and narrative prose; it can imply that the speaker is annoyed, reluctant, or trying not to be heard.
A low, indistinct remark or complaint; a murmur of dissatisfaction or disapproval.
"A mutter of protest passed through the crowd."
Usually singular when referring to one indistinct sound or remark, though it can be used in the plural for a general low collective reaction.
A mutter is often the sound of a thought that escapes its owner: too quiet to be heard, but audible enough to reveal irritation.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does mutter come from?
The English verb mutter developed from Old French muter, which was related to Latin muttire, meaning “to speak low or mutter.” The modern English form appeared in the early 16th century. Its senses for quiet, indistinct speech gradually developed alongside the more specific sense of complaining or grumbling, while cognate forms exist in several Germanic languages.
Related word forms
How mutter is actually used
Often used for speech that is intentionally quiet, indistinct, or reluctant. The verb can be mildly critical when it means to complain, and it is common in informal narrative and dialogue.
Easily confused with mutter
A murmur is generally a low, continuous or gentle sound, whereas a mutter often implies speaking words unclearly or complaining quietly.
Mumbling emphasizes indistinct speech, while muttering can suggest speaking through the teeth or quietly grumbling.