That’ll be very useful if the enemy try any treachery.
…of our trusty and well-beloved Caspian in clean wager of battle to prove upon your Lordship’s body that the said Caspian is lawful King under us in Narnia both by our gift and by the laws of the Telmarines, and your Lordship twice guilty of treachery both in withholding the dominion of Narnia from the said Caspian and in the most abhominable, — don’t forget to spell it with an H, Doctor — bloody, and unnatural murder of your kindly lord and brother King Caspian Ninth of that name.
As soon as they saw their King down they leaped into the lists crying, "Treachery!
There are no more uses of "treachery" in the book.
Show samples from other sources
Benedict Arnold remains the U.S.’s symbol of ultimate treachery.
She was going to get an award for bravery when she should really be kicked out of the Smoke for treachery.