crafty

adjective4

1. •
   Skillful at deceiving others.

   • For thy mouth uttereth thine iniquity, and thou choosest the tongue of the crafty. — 1611
2. •
   Sneaky; surreptitious.

   • I took a crafty look at his hand of cards while he was out of the room.
3. •
   Relating to, or characterized by, craft or skill; dexterous, clever.
4. •
   (old-fashioned) Magical or occult, or allegedly so.