Related Clues:

• "You ___ dog, you!"
• __ as a fox
• Sneaky and smart
• Adjective for 22-Down
• On the ___ (furtively)
• Like con artists
• Skilled at subtlety
• Stone or Stallone
• Clandestine and canny
• Like a three-card monte player
• Clever like a fox
• -- as a fox
• Not trustworthy
• Stallone, to fans
• Sly and devious