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English definition of “collusion”

collusion

noun [U]     /kəˈluː.ʒən/ formal
agreement between people to act together secretly or illegally in order to deceive or cheat someone: It is thought that they worked in collusion with the terrorist network.Plotting and trappingPlanning, expecting and arrangingCheating and tricking collusive     /-sɪv/ adjective There was evidence of collusive behaviour between the banks.Plotting and trappingPlanning, expecting and arrangingCheating and tricking
(Definition of collusion noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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