Related Clues:

• Plodding sort
• Plow puller
• Paid smuggler
• With 4-Down, upbraid in no uncertain terms
• Donkey
• Slip-on shoe
• Drug smuggler
• Bedroom slipper
• Stubborn animal
• Use four-letter words
• Stubborn beast
• Lounging footwear
• Backless slipper
• Braying beast
• Turn the air blue