1. express complaints, discontent, displeasure, or unhappiness
- My mother complains all day
Definition categories: communication
2. make a formal accusation; bring a formal charge
- The plaintiff's lawyer complained that he defendant had physically abused his client
Sentences with complain as a verb:
- Joe was always complaining about the noise made by his neighbours.
- They've complained about me to the police again.
- the complaining bed-springs