secret agreement especially in order to do something dishonest or to trick people The police were corrupt and were operating in collusion with the drug dealers. There was collusion between the two witnesses (= they gave the same false evidence).nounjump to other results
NAmE//kəˈluʒn//[uncountable] (formal) (disapproving)
collusivejump to other results
NAmE//kəˈlusɪv//adjective There is a secret collusive relationship between politics and the media which the outside world rarely glimpses.