| Answer | Crossword Clue |
|---|---|
| ICEUP | Become unnavigable in winter |
| ICEUP | Become unnavigable, as a sea in winter |
| ICEUP | Become slippery, in winter |
| ICEUP | Become slippery in winter |
| ICEUP | Become slippery in winter, in a way |
| ermine | any of several weasels whose coats become white in winter usually with black on the tip of the tail |
