WordWeb Online

1. Devoid of warmth and cordiality; expressive of unfriendliness or disdain
   "got a frosty reception"
   - frigid, frozen, glacial, icy, wintry
    
2. Covered with frost
   "a frosty glass"
   - rimed, rimy
    
3. Pleasantly cold and invigorating
   "crisp clear nights and frosty mornings"
   - crisp, nipping, nippy [Brit, Cdn], snappy

Derived forms: frostier, frostiest

See also: cold, frost, frostiness

Encyclopedia: Frosty, Heidi & Frank Frosty Frosty, Heidi and Frank Frosty, Heidi & Frank Show