[n] a bad-tempered person [v] show one's unhappiness or critical attitude; "He scolded about anything that he thought was wrong"; "We grumbled about the increased work load"
churl, crank, crosspatch, grumble, grump, scold
air a grievance, bear, beef, bellyache, bellyacher, bitch, clamor, complain, complainant, complainer, crab, crank, croak, croaker, crosspatch, dragon, faultfinder, feist, fire-eater, fret, fret and fume, frondeur, fury, fuss, gripe, griper, grizzly bear,