in league with

1. Also, in cahoots with. In close cooperation or in partnership with, often secretly or in a conspiracy. For example, “For anybody on the road might be a robber, or in league with robbers” (Charles Dickens, A Tale of Two Cities, 1859), or We suspect that the mayor is in cahoots with the construction industry. The first term dates from the mid-1500s. The variant, a colloquialism dating from the early 1800s, may come from the French cahute, “a small hut or cabin,” and may allude to the close quarters in such a dwelling.

Example Sentences

Now, in league with a quirky, baseball-focused non-profit, he’s composed a suite for Jackie Robinson’s centennial.

From Los Angeles Times

Yet Republican presidents and Congresses kept cutting taxes and, in league with Democrats, failed to make necessary and relatively painless adjustments to the so-called entitlement benefit programs.

From Los Angeles Times

The American Accountability Foundation, a project of the Heritage Foundation, placed Doyle on a “DHS bureaucrat watchlist” that aimed to expose career staff in “league with left-wing open border groups.”

From Los Angeles Times

Reno, wrote "Say No to Death's Dominion"; contrary to the title, he argues that death should be embraced, and that those who save lives through medical science are in league with Satan.

From Salon

On Thursday night, Harvard-Westlake improved to 2-0 in league with a 67-56 home victory over Crespi, which played without its injured standout, Peyton White.

From Los Angeles Times