nightmare 1 of 2

noun

ˈnīt-ˌmer How to pronounce nightmare (audio)
Definition of nightmarenext
as in agony
a situation or state that causes great suffering and unhappiness that 20-page exam was a nightmare

Synonyms & Similar Words

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Antonyms & Near Antonyms

nightmare

2 of 2

adjective

as in horrific
extremely disturbing or repellent survivors of a nuclear holocaust would surely face a nightmare existence

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Antonyms & Near Antonyms

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of nightmare
Noun
But the technology is also a snowballing privacy nightmare, according to critics who are fighting back with protests, legislation and websites dedicated to tracking the trackers. — N'dea Yancey-Bragg, USA Today, 8 Aug. 2026 Confronting unpredictable adversaries well-versed in asymmetrical warfare from three directions is a military planner’s nightmare. — Nadeen Ebrahim, CNN Money, 7 Aug. 2026
Adjective
This is the nightmare scenario behind the Kessler syndrome, a cascading chain of collisions that could render entire orbital pathways unusable. — Alan Bradley, Space.com, 2 Aug. 2026 But the 22-year-old is not alone in having a nightmare individual performance on a high-profile sporting stage. — Eduardo Tansley, New York Times, 12 Mar. 2026 See All Example Sentences for nightmare
Recent Examples of Synonyms for nightmare
  1. agony
  2. horrific
  3. misery
  4. gruesome
  5. horror
  6. shocking
  7. torture
  8. horrible
Noun
  • Such is the ecstasy, the agony, of judgment, which was never for their benefit.
    — Lauren Michele Jackson, New Yorker, 8 Aug. 2026
  • The man with almost no injury was writhing in agony, while the man with a four-inch nail lodged near his brain kept working for six days, not even realizing the nail was there.
    — Kevin Kruse, Forbes.com, 31 July 2026
Definition of agony
Adjective
  • Gen gets to bust out her flapper dress only to witness the most horrific, awful, potentially career-destroying failure … the caviar, oysters, and bread are all crowded onto the bread plate.
    — Emma Soren, Vulture, 11 Aug. 2026
  • In her very first on-screen role, Reeves brings a nuanced, brave, and deeply intuitive performance as the titular character, an eight-year-old San Francisco resident who witnesses a horrific crime and has to deal with the emotional fallout.
    — Kate Erbland, IndieWire, 11 Aug. 2026
Definition of horrific
Noun
  • But an agent may be harmed when its interests are thwarted, its autonomy denied or its existence ended without any pain or misery.
    — Andréa Morris, Forbes.com, 10 Aug. 2026
  • Things get increasingly bleak, as the family dog’s heart medicine runs out and Jason has to put him out of his misery, and then — in doomsday prepper mode — carves up the body and puts it in the freezer just in case food gets dire.
    — William Earl, Variety, 8 Aug. 2026
Definition of misery
Adjective
  • In a two-story warehouse on the back lot, just a few blocks away from the streets of Tumbleton, Mason gives me a tour of his prosthetics operation, which is currently abuzz with workers assembling gruesome wounds and other injuries.
    — Jackson McHenry, Vulture, 10 Aug. 2026
  • The utter carnage that follows brings major developments for all the main characters still on the chessboard — and many gruesome deaths by dragon fire, boiling oil, spikes and even catapults.
    — Bryan Alexander, USA Today, 10 Aug. 2026
Definition of gruesome
Noun
  • The creative team also has a big vote of confidence in horror mogul Jason Blum, who produced the original film and signed on as a producer of the play.
    — William Earl, Variety, 12 Aug. 2026
  • Precognition is a live-action sci-fi horror game from Barlow’s Half Mermaid Productions and UK indie outfit Kinetic Publishing.
    — Matt Gardner, Forbes.com, 12 Aug. 2026
Definition of horror
Adjective
  • Lindsay Hubbard, one of the stars of Bravo’s Summer House, was doing an on-camera interview for a different reality show when shocking news broke that two of her Summer House castmates had gotten together.
    — The Deadline Team, Deadline, 15 Aug. 2026
  • Wells, 39, laid his gloves down in the Octagon after the shocking victory.
    — Brian Mazique, Forbes.com, 15 Aug. 2026
Definition of shocking
Noun
  • Take a left on the president of the Confederacy who made the torture of Black bodies the cornerstone of his new nation.
    — Terry Gross, NPR, 14 Aug. 2026
  • All three defendants have pleaded not guilty to charges of murder, conspiracy, child abuse and torture.
    — Clara Harter, Los Angeles Times, 12 Aug. 2026
Definition of torture
Adjective
  • After years of seeing enough photos of fabulous wealth and horrible tragedy, these types of images cease to shock us.
    — Literary Hub, Literary Hub, 10 Aug. 2026
  • But the horrible jobs data suggests the central bank may have to think about weakening consumer spending as well.
    — Sarah Min, CNBC, 7 Aug. 2026
Definition of horrible

Browse Nearby Words

nightly
nightmare
nightmares
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Cite this Entry

“Nightmare.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/nightmare. Accessed 18 Aug. 2026.

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More from Merriam-Webster on nightmare

Nglish: Translation of nightmare for Spanish Speakers

Britannica.com: Encyclopedia article about nightmare

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