1. secret partnership or conspiracy, especially for dishonest purposes
Usage: informal; always used in the phrase ‘in cahoots’

Examples

• The two companies were in cahoots to fix prices.
• I suspect the manager is in cahoots with the thieves.
• The siblings were in cahoots to surprise their parents.
• The corrupt officials were in cahoots with the criminals.
• She discovered her business partner was in cahoots with their competitor.
• The students were in cahoots to cheat on the exam.