PHRASE 与…密谋;与…勾结 If you say that one person is in cahoots with another, you do not trust the first person because you think that they are planning something secretly with the other. 与…密谋;与…勾结 [disapproval]
In his view they were all in cahoots with the police. [+ with]
照他看,他们和警察都是一伙的。
I am not having you and him in cahoots against me.