Definition of frosty adjective from the Oxford Advanced American Dictionary

     

    frosty

     adjective
    adjective
    NAmE//ˈfrɔsti//
     
    (frostier, frostiest)
     
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  1. 1(of the weather) extremely cold; cold with frost a frosty morning He breathed in the frosty air. It's frosty outside.
  2. 2covered with frost frosty fields
  3. 3unfriendly, in a way that suggests that someone does not approve of something a frosty look/reply My questions were met with a frosty silence. The latest proposals were given a frosty reception.
NAmE//ˈfrɔstəli//
 
adverb “No, thank you,” she said frostily.
See the Oxford Advanced Learner's Dictionary entry: frosty