Synonyms of complaint in English:

complaint


See US English definition of complaint

See UK English definition of complaint

See Spanish definition of queja

noun

1‘they lodged a complaint with the European Commission’

SYNONYMS
protest, protestation, objection, remonstrance, statement of dissatisfaction, grievance, charge, accusation, criticism
cavil, quibble, grumble, moan, whine
Northern English twine
informal beef, gripe, grouse, grouch
British informal whinge
Australian informal yike
British Law plaint

2‘there appears to be little cause for complaint’

SYNONYMS
protesting, protestation, objection, exception, grievance, grumbling, carping, whining, moaning, muttering, murmuring
criticism, fault-finding, condemnation, disapproval, dissatisfaction, fulmination, outcry, fuss
Northern English mithering, twining
informal beefing, bitching, griping, grousing, grouching, bellyaching, nitpicking
British informal whingeing

3‘the patient has a kidney complaint’

SYNONYMS
disorder, disease, infection, affliction, illness, ailment, sickness, malady, malaise, infirmity, indisposition, weakness, condition, problem, upset
trouble
informal bug, virus
British informal lurgy
Australian informal wog