Synonyms of complain

Verb

1. complain, kick, plain, sound off, quetch, kvetch

usage: express complaints, discontent, displeasure, or unhappiness; "My mother complains all day"; "She has a lot to kick about"

2. complain, charge

usage: make a formal accusation; bring a formal charge; "The plaintiff's lawyer complained that he defendant had physically abused his client"

Definition and meaning of complain (Dictionary)