supercherie

noun2

1. •
   Deception, deceit; an instance of fraud.

   • 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. — 1863
2. •
   (no longer used) Foul play; an attack made by deceit.

   • 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. — 1603