grumbled
Definitions
To complain in a low, muffled, or discontented voice.
To make a low, rumbling sound, such as that of thunder or an empty stomach.
Examples
The old man grumbled about the cold weather as he locked the front door.
She grumbled under her breath when she realized she had to work through the weekend.
Synonyms
muttered complained groused moaned whined murmured bellyached