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English definition of “cooperate”

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cooperate

verb [I] uk ( UK also co-operate)   /kəʊˈɒp.ər.eɪt/ us    /koʊˈɑː.pə.reɪt/
B2 to act or work together for a particular purpose, or to be helpful by doing what someone asks you to do: I find it very hard to dress my two-year-old when she refuses to cooperate. The two companies have cooperated in joint ventures for the past several years. The Spanish authorities cooperated with the British police in finding the terrorists.
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(Definition of cooperate from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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