frost·y (frôstē, frŏstē)
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.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.