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Verb: grumble  grúm-bul
  1. Show one's unhappiness or critical attitude
    "We grumbled about the increased work load";
    - grouch, scold, moan
     
  2. Make complaining remarks or noises under one's breath
    "she grumbles when she feels overworked";
    - murmur, mutter, croak, gnarl, chunter [Brit]
     
  3. To utter or emit low dull rumbling sounds
    "he grumbled a rude response"; "Stones grumbled down the cliff";
    - growl, rumble
     
  4. Make a low noise
    "grumbling thunder";
    - rumble
Noun: grumble  grúm-bul
  1. A loud low dull continuous noise
    - rumble, rumbling, grumbling
     
  2. A complaint uttered in a low and indistinct tone
    - grumbling, murmur, murmuring, mutter, muttering

Derived forms: grumbled, grumbling, grumbles

Type of: complain, complaint, emit, go, kick, kvetch [N. Amer], let loose, let out, moan, noise, plain [archaic], quetch, sound, sound off, utter

Encyclopedia: Grumble