n. (informal)
25B6; noun an ill-mannered grouch : GRUMBLER, complainer, moaner; informal grump, sourpuss, crosspatch, whinger; Brit. informal misery, bear with a sore head; N. Amer. informal sorehead, kvetch.
25B6; verb there's not a lot to grouch about : GRUMBLE, complain, grouse, whine, bleat, carp, cavil; informal moan, whinge, gripe, beef, bellyache, bitch, sound off; Brit. informal chunter; N. Amer. informal kvetch.