Definition of "in league" []

• In cahoots (with) (adjective)

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• "Jefferson quietly withdrew, but he returned in early 1786, this time in league with the Marquis de Lafayette, recently returned from America."
• "The exact point where they joined forces with the others — whether they had been in league before or after Vandaariff had recruited them — was unclear, but he sensed immediately why they had all agreed to turn on their benefactor."
• "Evan Malone, urban legend—eighteen and in league with Satan, skinning goats up at Chamberlain Flat."