Related Clues:

• Primordial slime
• What 35-Down may do
• Move like glue
• Creep like lava
• Exhibit, as with smarminess
• Flow slow
• Move like ketchup
• Slugs do it
• Slip through the cracks?
• Behave like goop
• Soft mud
• Move like Slimer
• Squishy stuff
• Exhibit aplenty, as confidence
• Seep like sap