v. 25B6; verb PROTEST, grumble, whine, bleat, carp, cavil, grouse, make a fuss; object to, speak out against, oppose, criticize, find fault with; informal whinge, kick up a fuss, bellyache, moan, gripe, beef, bitch, sound off; Brit. informal chunter, create; N. Amer. informal kvetch.
COMPLAIN
Meaning of COMPLAIN in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012