Collins COBUILD Advanced Learner's English Dictionary - co-operate

also cooperate (co-operates, co-operating, co-operated) Frequency: The word is one of the 3000 most common words in English. 1. If you co-operate with someone, you work with them or help them for a particular purpose. You can also say that two people co-operate. The UN had been co-operating with the State Department on a plan to find countries willing to take the refugees... The couple spoke about how they would co-operate in the raising of their child... V-RECIP: V with n, pl-n V • co-operation A deal with Japan could indeed open the door to economic co-operation with East Asia. N-UNCOUNT 2. If you co-operate, you do what someone has asked or told you to do. He agreed to co-operate with the police investigation... The plan failed because the soldiers refused to co-operate. VERB: V with n, V • co-operation The police underlined the importance of the public’s co-operation in the hunt for the bombers. = assistance N-UNCOUNT