grumble /ˈɡɹʌmbl̩/noun 3verb 3forms 5 noun3 •A surly complaint.That whiner is never without a grumble to share. •A high thundering, rumbling or growling sound. •The sound made by a hungry stomach. verb3 •To complain; to murmur or mutter with discontent; to make ill-natured complaints in a low voice and a surly manner.He grumbles about the food constantly, but has yet to learn to cook. •To utter in a grumbling fashion.He grumbled that there was no grain "in the country" and that people were talking instead of working to provide it. — 2001 •To make a low, growling or rumbling noise, like a hungry stomach or certain animals.The distant thunder grumbles. formsgrumbled · grumbling · grumbles · grumbleth · grumblest