| adj.  frost·i·er, frost·i·est  1.  Producing or characterized by frost; freezing. See Synonyms at  cold. 2.  Covered with frost: looked out the frosty windows on the cold, winter morning. 3.  Silvery white; hoary: frosty hair. 4.  Cold in manner; unfriendly: a frosty look; a frosty farewell. 5.  Lacking enthusiasm: The movie got a frosty review. frosti·ly adv. frosti·ness n. | 
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.











