UNTHINKABLE Synonyms: 66 Similar and Opposite Words

unthinkable

adjective

ˌən-ˈthiŋ-kə-bəl

Definition of unthinkable

as in incredible

too extraordinary or improbable to believe to most people it seemed unthinkable that such a gentle man could be guilty of such awful crimes

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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 unthinkable Panettiere tenderly conveys the turmoil of being a kid who’s just trying to keep it together in the face of unthinkable circumstances. — Patrick Ryan, USA Today, 18 Aug. 2026 The United States’ drop in credibility has also emboldened many American adversaries to push ahead with initiatives that would have been unthinkable 10 years ago, the closure of the Strait of Hormuz being the prime example. — Letters To The Editor, Washington Post, 18 Aug. 2026 Los Angeles Times via Getty Images For two consecutive years, the Buss family agreed to something that once seemed unthinkable. — Mark Medina, Forbes.com, 17 Aug. 2026 Westbrook walks away as the undisputed Triple-Double King with 209, blowing past Oscar Robertson's once-unthinkable record of 181. — Alejandro Avila Outkick, FOXNews.com, 12 Aug. 2026 See All Example Sentences for unthinkable

Recent Examples of Synonyms for unthinkable

Adjective

Spread across four floors (including an incredible rooftop terrace), this is a spacious home located in the center of Essaouira’s medina and its art galleries.

— Katie Silcox, Vogue, 23 Aug. 2026
Then that incredible precision vanished for an inning — and just an inning.

— Kevin Acee, San Diego Union-Tribune, 22 Aug. 2026

Definition of incredible

Adjective

That’s unlikely to change now, especially as China sees how unpopular the ongoing conflict has been within the US and abroad, and as Chinese leader Xi Jinping is set to visit the United States next month.

— Nadeen Ebrahim, CNN Money, 24 Aug. 2026
However, working part-time is unlikely to improve your eligibility for federal student loans.

— Amy DeYoung, USA Today, 24 Aug. 2026

Definition of unlikely

Adjective

Besides, there are tree branches to bundle, coupons to clip, guacamole to toss out, incredulous news reports to run through Snopes and at least 20 spam texts to block.

— Donna Vickroy, Chicago Tribune, 13 Aug. 2026
His incredulous response opens the door to a fight that escalates quickly.

— Sabrina Reed, Forbes.com, 12 Aug. 2026

Definition of incredulous

Adjective

The figure is impossible to confirm but in line with estimates by Western officials.

— Tim Lister, CNN Money, 23 Aug. 2026
That might prove to be difficult, if not prohibitively expensive or just impossible, in urban areas with sewers, gas lines, fiber optic cables and whatnot installed beneath streets, parkways, sidewalks and paved alleys.

— Chicago Tribune, Chicago Tribune, 23 Aug. 2026

Definition of impossible

Adjective

There are plenty of inconceivable exploits in the final season of Outer Banks, in ranging degrees of ridiculousness.

— CT Jones, Rolling Stone, 21 Aug. 2026
After already undergoing two Tommy John surgeries to repair his UCL, Antone would now need an inconceivable third.

— Cal Phillips, Fort Worth Star-Telegram, 13 Aug. 2026

Definition of inconceivable

Adjective

Better yet, a falling price implies a rising price elsewhere or the introduction to the market of even more expensive goods formerly unknown, unimaginable, or both.

— John Tamny, Forbes.com, 23 Aug. 2026
Such a breakthrough was unimaginable 25 years ago because the methodology did not exist.

— Aaron Katersky, ABC News, 23 Aug. 2026

Definition of unimaginable

Adjective

Some of these 11- and 12-year-olds had unbelievable personalities, like a player named Matt Cassel.

— Eric Sondheimer, Los Angeles Times, 23 Aug. 2026
My feed was a deluge of content from the afternoon, the unbelievable bay sight lines contraposed with the towering bent-car Chamberlain sculptures that have remained in situ since their creator’s passing.

— Nate Freeman, Vanity Fair, 21 Aug. 2026

Definition of unbelievable

Browse Nearby Words

untethers

unthinkable

unthinkably

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“Unthinkable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unthinkable. Accessed 26 Aug. 2026.

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Synonyms of unthinkable

adjective

Example Sentences

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