# mumble

/ˈməmbəɫ/ (US) · /mˈʌmbəl/ (UK) · CEFR B2 · Noun

Source: https://englishreference.com/word/mumble
Updated: 2026-05-19

## Definition

a low, unclear sound that is hard to understand. You use this when someone is speaking too quietly or too fast to be heard clearly.

For teachers: a low, indistinct, or unintelligible sound, typically resulting from speech that is too quiet or too fast.

## Examples

- I could hear his mumble from across the room.
- The professor's mumble about the exam schedule was barely audible over the noise of the fans.
- The witness's mumble was the only evidence the jury had regarding the suspect's presence at the scene, though it was difficult to determine if he was speaking to himself or to a companion.

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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.