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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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 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 Minnesota’s Drake Lindsey has first-round potential; LaNorris Sellers had a nightmarish season in which the Gamecocks’ line surrendered 43 sacks but is one of the game’s most exciting players. — Scott Dochterman, New York Times, 23 Aug. 2026 What nightmarish scenarios would these two characters be facing? — Merrill Markoe, Deadline, 21 Aug. 2026 But the nightmarish realms of the Further retain their unnerving power, and some of the old-school ghost movie thrills are well done. — Bilge Ebiri, Vulture, 21 Aug. 2026 Production should improve from Lagway’s nightmarish SEC-leading 14 interceptions. — Noah White, Miami Herald, 18 Aug. 2026

Recent Examples of Synonyms for nightmarish

Adjective

No iPhone footage of the attack to replay in gruesome slow motion.

— Jeff Weiss, HollywoodReporter, 1 Sep. 2026
The inevitable father-son reunion is a result of gruesome circumstances.

— Christian Zilko, IndieWire, 28 Aug. 2026

Definition of gruesome

Adjective

The chilling new detail about Jesus Acosta’s horrific spree was revealed at the 31-year-old ex-con’s arraignment in Bronx Criminal Court late Sunday, where he was ordered held without bail for the two cold-blooded shootings.

— John Annese, New York Daily News, 31 Aug. 2026
Then there is the horrific crash on the McHenry County side of the Fox River, where on July 25 Alan Telmini and Magdalena Jablonska, both from Des Plaines, were cruising the river south of the McHenry Dam.

— Charles Selle, Chicago Tribune, 31 Aug. 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

In front of adoring fans in Shanghai, the UFC veteran and perennial contender in the UFC bantamweight division scored a shocking upset win over Umar Nurmagomedov in the main event on Saturday.

— Brian Mazique, Forbes.com, 29 Aug. 2026
The August nonfarm payrolls report that releases Friday will be coming off a low set of expectations, given the shocking loss of jobs in July.

— Sarah Min, CNBC, 28 Aug. 2026

Definition of shocking

Adjective

Anne Hathaway is a leftist, woke, horrible choice for DAYS OF THUNDER NASCAR audience who are MAGA.

— James Hibberd, HollywoodReporter, 31 Aug. 2026
These two rubber bands in our throat are affected by everything from hormones to psychology to a bad day to a horrible night’s sleep to the sniffles or whatever.

— Marissa R. Moss, Rolling Stone, 28 Aug. 2026

Definition of horrible

Adjective

Whether the outcome will be terrible or beautiful is unclear.

— Robert Rubsam, New Yorker, 2 Sep. 2026
Feral pigeons are famously terrible nest builders and are drawn to buildings and roofs with features like solar panels, chimneys, eaves, and AC units to make their homes.

— Molly Burford, Southern Living, 1 Sep. 2026

Definition of terrible

Adjective

The thoughts that accompany these conditions can be alarming and frightening, making many women reluctant to talk about them or seek help.

— Helen Carefoot, Flow Space, 28 Aug. 2026
There are frightening stories of swordfish charging boats, and even spearing their transoms and whacking propellers.

— Bob McNally, Outdoor Life, 26 Aug. 2026

Definition of frightening

Adjective

Finding a place where the familiar and the horrifying meet has always been a sweet spot for Kelly.

— Alison Willmore, Vulture, 28 Aug. 2026
IndieWire exclusively releases the video, which sees the two directors discussing everything from post-production workflows to the horrifying experience of being a young person in a world that often feels brutally unstable.

— Christian Zilko, IndieWire, 28 Aug. 2026

Definition of horrifying

Browse Nearby Words

nightmares

nightmarish

night owl

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“Nightmarish.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/nightmarish. Accessed 6 Sep. 2026.

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Synonyms of nightmarish

adjective

Example Sentences

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