horror

noun

1. (countable, uncountable)An intense distressing emotion of fear or repugnance.

   “Their swarthy Hosts wou'd darken all our Plains, / Doubling the native Horror of the War, / And making Death more grim.”

2. (countable, uncountable)Something horrible; that which excites horror.

   “I saw many horrors during the war.”

   “The Home Magazine for July (Binghamton and New York) contains ‘The Patriots' War Chant,’ a poem by Douglas Malloch; ‘The Story of the War,’ by Theodore Waters; ‘A Horseman in the Sky,’ by Ambrose Bierce, with a portrait of Mr. Bierce, whose tales of horror are horrible of themselves, not as war is horrible; ‘A Yankee Hero,’ by W. L. Calver; ‘The Warfare of the Future,’ by Louis Seemuller; ‘Florence Nightingale,’ by Susan E. Dickenson, with two rare portraits, etc.”

   “Could there be stories with more horror than these?”

3. (countable, uncountable)Intense dislike or aversion; an abhorrence.

   ““Mrs. Yule's chagrin and horror at what she called her son's base ingratitude knew no bounds ; at first it was even thought that she would never get over it. […] ””

4. (uncountable)A genre of fiction designed to evoke a feeling of fear and suspense.

   “Those who enjoy horror, stories overflowing with blood and black mystery, will be grateful to Richard Marsh for writing ‘The Beetle.’”

   “A well-received Johnny Fuller R & B horror called "Haunted House."”

   “[…] there were hastily produced B movies, such as the peplums, the spaghetti westerns, the detective stories, the horrors.”

5. (countable)A genre of fiction designed to evoke a feeling of fear and suspense.
6. (colloquial, countable)A nasty or ill-behaved person; a rascal or terror.

   “The neighbour's kids are a pack of little horrors!”

7. (countable, informal, uncountable)An intense anxiety or a nervous depression; often the horrors.
8. (countable, in-plural, informal, uncountable)Delirium tremens.

   “`My belief is that he had the horrors without knowin' it.'”