Related Clues:

• More dispassionate
• More frost-covered
• More slippery, in winter
• Not nearly as cordial
• More frigid
• Less sympathetic
• More unfriendly
• More polar
• More frosty
• Not so genial
• More treacherous in the winter
• Not as cordial
• More hazardous, in a way
• Less receptive
• More slippery, probably