complain Meaning, definition in Cambridge English Dictionary
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Meaning of "complain" - English Dictionary

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complainverb [I]

uk   us   /kəmˈpleɪn/
B1 to say that something is wrong or not satisfactory: Lots of people have complained about the noise. You're always complaining! [+ that] He complained that his boss was useless and he had too much work.B1 to tell someone formally that something is wrong: If the service was so bad why didn't you complain to the manager?
More examples
complainingly
adverb uk   us   /kəmˈpleɪ.nɪŋ.li/
"You always walk too fast for me," she said complainingly.
Phrasal verbs
(Definition of complain from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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