collusion
n. uncountable C1 Advanced US //kəˈɫuʒən// UK //kəlˈuːʒən// col·lu·sion
n. a secret agreement between groups or people to deceive others or gain an unfair advantage.
n. secret or illegal cooperation between parties to achieve a common purpose, often to the detriment of others.
The two companies were accused of price-fixing collusion.
Investors lost money because of the collusion between the bank and the insurance firm.
The scandal revealed a deep collusion between corporate executives and government regulators, undermining public trust in the market.
Dated from the 14th century C.E. as Middle English collusioun, collusion; from Old French collusion, from Latin collusio (“act of colluding”).