COMPLAIN

[verb] - to say that something is wrong or not satisfactoryHe complains about anything - his job, his wife, his back... [I]You're always complaining! [I]He complained that his boss was useless and he had too much work. [+ that clause]To complain is also to tell someone formally that something is wrong.If the service was so bad why didn't you complain to the manager?If you complain of a sore throat, back pain, etc., you tell other people what it is that is making you feel ill.She's been complaining of a bad back recently.