grumble

1. v. i. To murmur or mutter with discontent; to make ill-natured complaints in a low voice and a surly manner. Source: opted

2. v. i. To growl; to snarl in deep tones; as, a lion grumbling over his prey. Source: opted

3. v. i. To rumble; to make a low, harsh, and heavy sound; to mutter; as, the distant thunder grumbles. Source: opted

4. v. t. To express or utter with grumbling. Source: opted

5. n. The noise of one that grumbles. Source: opted

6. n. A grumbling, discontented disposition. Source: opted

7. n. a loud low dull continuous noise Source: wordnet

8. n. a complaint uttered in a low and indistinct tone Source: wordnet

9. v. show one's unhappiness or critical attitude Source: wordnet

10. v. make complaining remarks or noises under one's breath Source: wordnet

11. v. to utter or emit low dull rumbling sounds Source: wordnet

12. v. make a low noise Source: wordnet

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