· a loud low dull continuous noise; "they heard the rumbling of thunder"
Synonym(s): rumble, rumbling, grumbling
Hypernym(s): noise
· a complaint uttered in a low and indistinct tone
Synonym(s): grumbling, murmur, murmuring, mutter, muttering
Hypernym(s): complaint
· show one's unhappiness or critical attitude; "He scolded about anything that he thought was wrong"; "We grumbled about the increased work load"
Hypernym(s): complain, kick, plain, sound_off, quetch, kvetch
· make complaining remarks or noises under one's breath; "she grumbles when she feels overworked"
Synonym(s): murmur, mutter, croak, gnarl
Hypernym(s): complain, kick, plain, sound_off, quetch, kvetch
· to utter or emit low dull rumbling sounds; "he grumbled a rude response"; "Stones grumbled down the cliff"
Hypernym(s): utter, emit, let_out, let_loose
· make a low noise; "rumbling thunder"
Synonym(s): rumble