v. mourned, mourn·ing, mourns
1. To feel or express grief or sorrow. See Synonyms at grieve.
2. To show grief for a death by conventional signs, as by wearing black clothes.
3. To make a low, indistinct, mournful sound. Used especially of a dove.
1. To feel or express deep regret for: mourned the wasted years.
2. To grieve over (someone who has died).
3. To utter sorrowfully.
[Middle English mornen, from Old English murnan, to be anxious, care about, yearn, mourn; see (s)mer-1 in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 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.