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1. Expressing pain or dissatisfaction of resentment
   "a complaining boss"
   - complaintive

1. Express complaints, discontent, displeasure, or unhappiness
   "My mother complains all day"
   - kick, plain [archaic], sound off, quetch, kvetch [N. Amer]
    
2. Make a formal accusation; bring a formal charge
   "The plaintiff's lawyer complained that he defendant had physically abused his client"

See also: complainant, complainer, complainingly, complaint, fretful, protestant, querulous, whiney, whiny

Type of: charge

Antonym: cheer, uncomplaining

Encyclopedia: Complain