Grumble
Grum´ble
| v. i. | 1. | To murmur or mutter with discontent; to make ill-natured complaints in a low voice and a surly manner. |
| 2. | To growl; to snarl in deep tones; | |
| 3. | To rumble; to make a low, harsh, and heavy sound; to mutter; | |
| v. t. | 1. | To express or utter with grumbling. |
| n. | 1. | The noise of one that grumbles. |
| 2. | A grumbling, discontented disposition. |
| Noun | 1. |  grumble - a loud low dull continuous noise; "they heard the rumbling of thunder" |
| 2. | grumble - a complaint uttered in a low and indistinct tone | |
| Verb | 1. | grumble - show one's unhappiness or critical attitude; "He scolded about anything that he thought was wrong"; "We grumbled about the increased work load" |
| 2. | grumble - make complaining remarks or noises under one's breath; "she grumbles when she feels overworked" | |
| 3. | grumble - to utter or emit low dull rumbling sounds; "he grumbled a rude response"; "Stones grumbled down the cliff" | |
| 4. | grumble - make a low noise; "rumbling thunder" Synonyms: rumble |