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hor·ror (hôrər, hŏr-)
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n.
1.
a. An intense, painful feeling of repugnance and fear.
b. A state or condition marked by this feeling: stood in horror looking at the scene. See Synonyms at fear.
2. An intense dislike or abhorrence: had a horror of being forced to play charades at the party.
3. A cause of horror: "The creature that had seemed a horror in its box was, up close, a figure of sorrow" (Paul Theroux).
4.
a. A genre of fiction or other artistic work evoking suspense and horror, especially through the depiction of gruesome or supernatural elements.
b. A work of this genre.
5. Informal One that is unpleasant, ugly, or disagreeable: That hat is a horror.
6. horrors Informal Intense nervous depression or anxiety. Often used with the.

[Middle English horrour, from Old French horreur, from Latin horror, from horrēre, to tremble.]

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:

    Indo-European Roots

    Semitic Roots

    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.