grumbling

Definitions of grumbling
1

n a complaint uttered in a low and indistinct tone

Synonyms:
grumble, murmur, murmuring, mutter, muttering
Type of:
complaint
an expression of grievance or resentment

n a loud low dull continuous noise

Synonyms:
grumble, rumble, rumbling
Type of:
noise
sound of any kind (especially unintelligible or dissonant sound)

adj continuous full and low-pitched throbbing sound

Synonyms:
rumbling
full
(of sound) having marked deepness and body

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