NIGHTMARISH Synonyms: 81 Similar and Opposite Words

nightmarish

adjective

Definition of nightmarish

as in gruesome

extremely disturbing or repellent a photographic exhibit of nightmarish images from the wars of the 20th century

Synonyms & Similar Words

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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 nightmarish Rodgers bounced back from a nightmarish performance in a dismal loss to New England by throwing for 292 yards and three touchdowns to outduel Joe Burrow as the Steelers pulled out a 30-27 thriller. — ABC News, 27 Sep. 2026 So far, the sequel is off to a nightmarish start, and neither Ballard nor Steichen should feel safe after being at the helm of such an embarrassing showing. — James Boyd, New York Times, 14 Sep. 2026 As Pattinson spends a long night trying to rescue his brother, the Safdies weave a nightmarish, impressionistic vision of New York that ranks among the most unsettling cinematic depictions of the city. — Declan Gallagher, Entertainment Weekly, 3 Sep. 2026 Maddie and Avery moved back from New York to help out as their mother tried to keep Little Flower going while dealing with dislocation and a nightmarish battle with her insurance company. — Steve Lopez, Los Angeles Times, 1 Sep. 2026 There's little parking at the Coliseum, meaning fans are forced into a nightmarish hellscape of distant structures, and the security lines are infamously awful at an old stadium. — Ian Miller Outkick, FOXNews.com, 1 Sep. 2026 The idea sounded at once mystical, therapeutic, and nightmarish. — Sebastian Smee, The Atlantic, 28 Aug. 2026 Which makes sense given that, nightmarish dystopian scenario or not, Scott’s movie isn’t science fiction. — David Fear, Rolling Stone, 28 Aug. 2026 What nightmarish scenarios would these two characters be facing? — Merrill Markoe, Deadline, 21 Aug. 2026

Recent Examples of Synonyms for nightmarish

Adjective

Against the backdrop of a gruesome day, the Hebrew-language movie unfolds individual emotions and lives both before and during the attack, everyday problems of course not stopping with the tragedy, just interacting with it.

— Steven Zeitchik, HollywoodReporter, 7 Oct. 2026
For centuries, this scene has been believed to show Harold’s gruesome end.

— Alicja Zelazko, Encyclopedia Britannica, 7 Oct. 2026

Definition of gruesome

Adjective

My heart goes out to her family, friends, and everyone who is affected by this horrific incident.

— Bill Hutchinson, ABC News, 4 Oct. 2026
In late August, a horrific but fortunately injury-free blaze at the Folsom Flea Market wreaked havoc on a number of small local businesses operating out of the space.

— Aaron Davis, Sacbee.com, 2 Oct. 2026

Definition of horrific

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

Definition of nightmare

Adjective

Hill is a free agent after a horrible injury suffered last season.

— Pete Grathoff, Kansas City Star, 5 Oct. 2026
Ashley Flynn’s sister, Kayla Keyt, said during her victim statement that her family could not overcome their sense of shock and despair after learning that Flynn betrayed them in such a violent and horrible way.

— Alicia Victoria Lozano, NBC news, 5 Oct. 2026

Definition of horrible

Adjective

Platforms prefill a name, email and phone number so a user can submit in one tap without leaving the feed, which is wonderful for a consumer promotion and terrible for a six-figure investment.

— Jonathan Durante, Forbes.com, 5 Oct. 2026
Saddled with terrible reviews and negative word-of-mouth, Tom Cruise‘s absurdist dark comedy has cratered at the box office with $8 million in North America and $20 million globally in its first weekend of release.

— Rebecca Rubin, Variety, 5 Oct. 2026

Definition of terrible

Adjective

Josh, much of the social media conversation around people seeing The Odyssey in theaters was about the frightening Other Mommy trailer playing ahead of it.

— Lexy Perez, HollywoodReporter, 2 Oct. 2026
My Broken Brain follows three young survivors through the most frightening days of their lives and the grueling journey back to independence.

— Jesse Whittock, Deadline, 30 Sep. 2026

Definition of frightening

Browse Nearby Words

nightmares

nightmarish

night owl

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Style

“Nightmarish.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/nightmarish. Accessed 11 Oct. 2026.

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Synonyms of nightmarish

adjective

Example Sentences

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