verb
1.
to complain in a low harsh voice and often in a surly manner
workers grumbling about the low wages
Synonyms: croak, grouch, grouse, ||grunt, murmur, mutter, scold; compare complain
Related Word: ||beef, ||bellyache, ||bitch, brawl, crab, fuss, gripe, holler, squawk, whine; groan, moan; complain, kick
Contrasted words: applaud, cheer; rejoice
2.
Synonyms: rumble , growl, roll