muttered under one's breath

Definitions

To speak in a low, indistinct voice, often to express dissatisfaction or annoyance without intending to be heard clearly.

To utter words quietly to oneself, typically as a sign of frustration, disagreement, or secrecy.

Examples

He muttered under his breath about the unfairness of the new company policy.

She muttered under her breath that she would rather be anywhere else than at this meeting.

Synonyms

grumbled quietly whispered indistinctly murmured inaudibly mumbled to oneself spoke in a low voice

Antonyms

spoke clearly shouted aloud declared openly articulated distinctly proclaimed loudly