1. covered with frost or very cold
2. unfriendly or hostile in manner

Examples

• The frosty morning air made her breath visible.
• We walked across the frosty grass in the early dawn.
• The car windows were frosty and needed scraping.
• She gave him a frosty look when he arrived late.
• His frosty response indicated he was still angry.
• The meeting had a frosty atmosphere after the disagreement.