Supercherie

it is a Superchiery,[…] as being wel armed, to charge a man who hath but a piece of a sword, or being sound and strong, to set upon a man sore hurt.

We[…]should certainly deny to any teacher of morals, in any age, who resorted to such ‘supercherie’ and charlatanism, any very high place among the instructors and benefactors of mankind.

According to France's foreign minister, the British foreign secretary is guilty of perpetrating a supercherie.