adj. un·luck·i·er, un·luck·i·est
1. Subjected to or marked by misfortune: unlucky at roulette; an unlucky day.
2. Resulting or likely to result in misfortune; inauspicious: It is considered unlucky to break a mirror. See Synonyms at unfortunate.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. 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.