grumble
verb(grum-ble)
to utter or emit low dull rumbling sounds
Examples:
He grumbled a rude response.
Stones grumbled down the cliff.
grumble
noun(grum-ble)
a complaint uttered in a low and indistinct tone
grumble
verb(grum-ble)
show one's unhappiness or critical attitude
Examples:
We grumbled about the increased work load.
grumble
verb(grum-ble)
make complaining remarks or noises under one's breath
Examples:
She grumbles when she feels overworked.
grumble
verb(grum-ble)
make a low noise
grumble
noun(grum-ble)
a loud low dull continuous noise