IPA: /ˈfrɔːsti/
KK: /ˈfrɔsti/
Having a very cold temperature or covered with frost; can also describe a cold or unfriendly manner.
The frosty morning made it difficult to see the road ahead.
Comparative: frostier
Superlative: frostiest
Frosty → It is formed from "frost" (from Old English *forst*, meaning frozen dew or ice) and "-y" (a suffix used to form adjectives indicating a characteristic). The word "frosty" describes a characteristic of being covered with frost or having the quality of frost.
Think of 'frost' as the icy layer that forms when temperatures drop, and the '-y' indicates a quality, so 'frosty' means having the quality of frost.