1. [ verb ] show one's unhappiness or critical attitude
Synonyms: scold grouch

"He scolded about anything that he thought was wrong" "We grumbled about the increased work load"

Related terms: complain scold whiner grouch
2. [ verb ] make complaining remarks or noises under one's breath
Synonyms: mutter gnarl croak murmur

"she grumbles when she feels overworked"

Related terms: complain
3. [ noun ] a loud low dull continuous noise
Synonyms: rumble grumbling rumbling

"they heard the rumbling of thunder"

Related terms: noise borborygmus rumble
4. [ verb ] to utter or emit low dull rumbling sounds
Synonyms: growl rumble

: "he grumbled a rude response." "Stones grumbled down the cliff"

Related terms: utter rumble growl growling
5. [ verb ] make a low noise, as of thunder
Synonyms: rumble
Related terms: go rumble
6. [ noun ] a complaint uttered in a low and indistinct tone
Synonyms: grumbling mutter murmuring muttering murmur
Related terms: complaint murmur
Similar spelling:   Grumbles