Related Clues

• Jammed, in a way
• Needed a coating of heated propylene glycol, say
• Froze solid
• Became dangerous to drive in December
• Froze over
• Got dangerous, as a road, perhaps
• Got slick
• Needing defrosting
• Frozen over
• Became slick
• Became frosted
• Became frozen
• Got frosty
• Became a winter hazard, as a road
• Slick, in a way
• Got slick after sleet
• Frosted desserts, the second sent back
• Became impassable, in a way
• Like some winter windshields