com·plain 
/kəmˈpleɪn/ verb
com·plains; com·plained; com·plain·ing /kəmˈpleɪn/ verb 1 [no obj] : to say or write that you are unhappy, sick, uncomfortable, etc., or that you do not like something
▪ He works hard but he never complains. ▪ If you're unhappy with the service, you should complain to the manager. — often + about or of ▪ Customers are sure to complain about the price increase. ▪ In her letters, she complains of loneliness. [=she says that she is lonely] ▪ She complained of a sore throat. [=she said she had a sore throat] ▪ “How are you feeling?” “I can't complain.” [=I am not unhappy or ill; I am fine] 2 [+ obj] : to say (something that expresses annoyance or unhappiness)
▪ The students complained that the test was too hard. ▪ “These shoes are too tight,” he complained.
▪ He works hard but he never complains. ▪ If you're unhappy with the service, you should complain to the manager. — often + about or of ▪ Customers are sure to complain about the price increase. ▪ In her letters, she complains of loneliness. [=she says that she is lonely] ▪ She complained of a sore throat. [=she said she had a sore throat] ▪ “How are you feeling?” “I can't complain.” [=I am not unhappy or ill; I am fine]
▪ The students complained that the test was too hard. ▪ “These shoes are too tight,” he complained.
— com·plain·er noun, plural com·plain·ers [count]
▪ He's a chronic complainer. [=he complains constantly or often]
▪ He's a chronic complainer. [=he complains constantly or often]
— com·plain·ing·ly /kəmˈpleɪnɪŋli/ adverb
/kəmˈpleɪnɪŋli/ adverb
