Related Clues:

• Behave furtively
• Sort of snake in the grass
• Sly person
• Grow along the ground
• One going behind your back
• Underhanded schemer
• Crafty sort
• Crafty person
• Slither
• Preview opener?
• '___ Previews' (onetime show of 48-Down)
• Unsavory sort
• Willies giver
• Clandestine sort
• Goal line play