adj. chill·i·er, chill·i·est
1. Cool or cold enough to cause discomfort. See Synonyms at cold.
2. Feeling cold, often to the point of shivering.
3. Unenthusiastic: The movie opened to a chilly reception from the critics.
4. Distant and cool; unfriendly: a chilly look.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2019 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.