be in cahoots

be in cahoots
To be working together in secret, often with an air of unseemliness.
Those two have been whispering all day. I wonder what they're in cahoots about.
I think all of those kids are in cahoots because they're all on the surveillance video from the night of the robbery.
See also: cahoots
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.
be in ca;hoots (with somebody) (informal) be planning or doing something dishonest with somebody else: Some people believe that the company directors are in cahoots with the government.
See also: cahoots
Farlex Partner Idioms Dictionary © Farlex 2017
See also:
cahoots
in cahoots
in cahoots (with someone)
in cahoots with someone
give the game away
give the show away
give the (whole) show away
wonder
foment trouble
no small wonder

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Partnership, league
According to 3 sources
The meaning of CAHOOT is partnership, league —usually used in plural—usually used in phrase like in cahoots to describe people or groups working together or making plans together in secret.