Webster's Revised Unabridged Dictionary · 1913

Grumble

Grumble , intransitive verb

[Compare LG. grummeln, grumen, Dutch grommelen, grommen, and French grommeler, of German origin; compare Welsh grwm, murmur, grumble, surly. r35. Compare Grum, Grim.]

1.
To murmur or mutter with discontent; to make ill-natured complaints in a low voice and a surly manner.
L'Avare, not using half his store, Still grumbles that he has no more. — Prior
2.
To growl; to snarl in deep tones; as, a lion grumbling over his prey.
3.
To rumble; to make a low, harsh, and heavy sound; to mutter; as, the distant thunder grumbles.

Grumble , transitive verb

To express or utter with grumbling.

Grumble , noun

1.
The noise of one that grumbles.
2.
A grumbling, discontented disposition.
A bad case of grumble. — Mrs. H. H. Jackson