- - Got frozen
- - Froze solid
- - Froze over
- - Froze
- - Frozen over
- - Frozen over (2 wds.)
- - Like some winter windshields
- - Became frosted
- - Became impassable, in a way
- - Got slick after sleet
- - Acquired a slick coat
- - Became a winter hazard, as a road
- - Became slick
- - Got frosty
- - Needed a coating of heated propylene glycol, say
- - Got dangerous, as a road, perhaps
- - Needing defrosting
- - Got slick
- - Became dangerous to drive in December
- - Jammed, in a way
- - Frosted
- - Slick, in a way
- - Frost-covered
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