from The American Heritage® Dictionary of the English Language, 4th Edition
- n.pl. Informal Questionable collaboration; secret partnership: an accountant in cahoots with organized crime.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Collusion or collaboration to nefarious ends.
Perhaps from French cahute, cabin, from Old French, possibly blend of cabane; see cabin, and hutte; see hut.(American Heritage® Dictionary of the English Language, Fourth Edition)
This word was first used in popular English literature sometime before 1829. It comes perhaps from French cahute ("cabin"), from Old French, possibly blend of cabane ("cabin"), and hutte ("hut"). Also thought to be from French cohorte. (Wiktionary)