from
The Collaborative International Dictionary of English v.0.48
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.
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L'Avare, not using half his store,
Still grumbles that he has no more. --Prior.
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2. To growl; to snarl in deep tones; as, a lion grumbling
over his prey.
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3. To rumble; to make a low, harsh, and heavy sound; to
mutter; as, the distant thunder grumbles.
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