Related Clues:

• Clandestine and canny
• Sly and inventive
• Like a three-card monte player
• Clever like a fox
• -- as a fox
• Not trustworthy
• Stallone, to fans
• Cunning, wily
• Devious and cunning
• Cunning and wily
• Crafty, devious
• Cunning, foxy
• Wily and cunning
• Wily, shifty
• Doing things in unpleasant and secret way