complain

Universal Words verb ~ (to sb) (about / of sth) to say that you are annoyed, unhappy or not satisfied about sb/sth: [V] I'm going to complain to the manager about this. * She never complains, but she's obviously exhausted. * The defendant complained of intimidation during the investigation. * (spoken) 'How are you?' 'Oh, I can't complain (= I'm all right).' * [V(that)] He complained bitterly that he had been unfairly treated. * [Vspeech] 'It's not fair,' she complained. PHRASALVERBS complain of sth to say that you feel ill or are suffering from a pain: She left early, complaining of a headache.