'Grumbling' definitions:

Definition of 'grumbling'

(from WordNet)
adjective
Continuous full and low-pitched throbbing sound; "the rumbling rolling sound of thunder" [syn: grumbling, rumbling]
noun
A loud low dull continuous noise; "they heard the rumbling of thunder" [syn: rumble, rumbling, grumble, grumbling]
noun
A complaint uttered in a low and indistinct tone [syn: grumble, grumbling, murmur, murmuring, mutter, muttering]

Definition of 'Grumbling'

From: GCIDE
  • Grumble \Grum"ble\, v. i. [imp. & p. p. Grunbled; p. pr. & vb. n. Grumbling.] [Cf. LG. grummeln, grumen, D. grommelen, grommen, and F. grommeler, of German origin; cf. W. grwm, murmur, grumble, surly. [root]35. Cf. Grum, Grim.]
  • 1. To murmur or mutter with discontent; to make ill-natured complaints in a low voice and a surly manner. [1913 Webster]
  • L'Avare, not using half his store, Still grumbles that he has no more. --Prior. [1913 Webster]
  • 2. To growl; to snarl in deep tones; as, a lion grumbling over his prey. [1913 Webster]
  • 3. To rumble; to make a low, harsh, and heavy sound; to mutter; as, the distant thunder grumbles. [1913 Webster]

Words containing 'Grumbling'