from Wiktionary, Creative Commons Attribution/Share-Alike License
- In a state of confusion.
- In a state of dispute or disagreement.
Unknown, though it may have originated from the game of hazard and the Old French cinc ("five") and sis ("six"), the riskiest numbers to shoot for, which were misheard and folk-etymologized into English as "six" and "seven". (Wiktionary)