grumbl ( synonym found)
Definition of grumbl:

°A low thundering, rumbling or growling sound.
°The sound made by a hungry stomach.
°To make a low, growling or rumbling noise, like a hungry stomach or certain animals.
°To complain.
Definition of grumbl:

°A low thundering, rumbling or growling sound.
°The sound made by a hungry stomach.
°To make a low, growling or rumbling noise, like a hungry stomach or certain animals.
°To complain.
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