Grumble
Part of speech: verb
Definition: To make a low, growling or rumbling noise, like a hungry stomach or certain animals. To complain. To utter in a grumbling fashion.
Part of speech: noun
Definition: A low thundering, rumbling or growling sound The sound made by a hungry stomach A complaint
Rumble
Part of speech: noun
Definition: A low pitched irregular noise.A street fight or brawl.
Part of speech: verb
Definition: To make a low pitched noise.To discover deceitful or underhanded behaviour.To move while making a rumbling noise.fight, brawl.