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Definition of 'grumbling'

See also: grumble 

Noun

  1. a loud low dull continuous noise; "they heard the rumbling of thunder"
       Synonyms: rumble rumbling grumble
  2. a complaint uttered in a low and indistinct tone
       Synonyms: grumble murmur murmuring mutter muttering

Adjective

  1. continuous full and low-pitched throbbing sound; "the rumbling rolling sound of thunder"
       Synonyms: rumbling
  2. muttering discontentedly; "the grumbling boarders requested a meeting with the cook"


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