Complaint
Protest
Synonyms Protest, objection, statement of dissatisfaction, charge, criticism, quibble, moan, twine, gripe, grouch, yike, protestation, remonstrance, grievance, accusation, cavil, grumble, whine, beef, grouse, whinge, and plaint.
Objection
Synonyms Protesting, objection, grievance, carping, moaning, murmuring, fault-finding, disapproval, fulmination, fuss, twining, bitching, grousing, bellyaching, whingeing, protestation, exception, grumbling, whining, muttering, criticism, condemnation, dissatisfaction, outcry, mithering, beefing, griping, grouching, and nitpicking.
Disease
Example Sentences
She filed a complaint about service.
His complaint was addressed immediately.
The complaint was taken seriously, thankfully.
I received a formal complaint yesterday.