What is the synonym of 'grumble'?
The synonym of the word 'grumble' is to complain or to murmur. It is usually used to describe a sound or a low, continuous complaining. It can be used to describe a person's voice or the sound of an engine. Other synonyms include grumble, grouse, gripe, grump, and moan. In some cases, grumbling may be used as a form of protest or to express dissatisfaction or annoyance. Therefore, it is important to use the word in the right context.
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