American Dictionary

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Definition grumble in American English

grumble verb

[intransitive] verb
/ˈɡrʌmb(ə)l/
Example

He grumbled that it was Saturday night and he didn't have a date.

Example

Children always grumble about school food.

Example

She grumbles at her employees over the slightest thing.

Synonyms and related words
2

to make a low continuous sound

Synonyms and related words
Definition grumble in American English