| grumble | (n) a complaint uttered in a low and indistinct tone, Syn. mutter, murmur, muttering, murmuring, grumbling |
| grumble | (v) to utter or emit low dull rumbling sounds, Syn. growl, rumble, Example: he grumbled a rude response; Stones grumbled down the cliff |
| grumbling | (adj) continuous full and low-pitched throbbing sound, Syn. rumbling, Example: the rumbling rolling sound of thunder |
| Grumble | v. i. L'Avare, not using half his store, |
| Grumble | v. t. To express or utter with grumbling. [ 1913 Webster ] |
| Grumble | n. A bad case of grumble. Mrs. H. H. Jackson. [ 1913 Webster ] |
| Grumbler | n. One who grumbles. [ 1913 Webster ] |
| Grumblingly | adv. In a grumbling manner. [ 1913 Webster ] |