(p. pr. & vb. n.) of Grumble.

beef beefing bellyache bellyaching bitch bitching boom booming complaining complaint complaintful crabbing crabby cranky croaking destructive criticism disappointed discontented disgruntled displeased dissatisfied dissent echo envious faultfinding grievance gripe griping groan groaning grouchy grouse grousing growl growling gruff grumble grumbly grumpish grumpy holler howl kick kicking malcontent malcontented murmuring muttering out of humor peeve peevish peevishness pet peeve petulance petulant protest querulant querulous querulousness rebellious reboation rebound reecho resentful resound resounding restive restless reverberation rumble rumbling scolding sniping squawk squawking sulky thunder thundering unaccepting unaccommodating uneasy unfulfilled ungratified unhappy unsatisfied whining whiny yapping