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

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 unthinkable Many Democratic leaders predict that the House majority is all but theirs, and that the Senate majority, almost unthinkable a year ago, is nearly in their grasp as well. — ABC News, 30 Sep. 2026 Micron is generating margins that would have been almost unthinkable in previous memory cycles, while the stock still trades at one of the lowest earnings multiples in the S & P 500 . — Isabella Gao, CNBC, 29 Sep. 2026 That would be impractical in Soho and unthinkable in Times Square. — Adriane Quinlan, Curbed, 29 Sep. 2026 Japan, a country constitutionally bound to pacifism since World War II, is investing in its defense and contributing to regional security in ways that were previously unthinkable. — David Sacks, Foreign Affairs, 28 Sep. 2026 See All Example Sentences for unthinkable

Recent Examples of Synonyms for unthinkable

Adjective

Within a few years, Torra was playing in metal bands across Long Island, belting out songs by Skid Row, Cinderella, Ratt, and yes, Quiet Riot, with incredible power and force.

— Andy Greene, Rolling Stone, 2 Oct. 2026
There are so many incredible materials for artists here, all for free.

— Maximilíano Durón, ARTnews.com, 2 Oct. 2026

Definition of incredible

Adjective

The political situation in the United States may have made the prospect of an American pope seem even more unlikely.

— Scott Detrow, NPR, 3 Oct. 2026
The Justice Department argued the outlets are unlikely to succeed on their claims and urged Kelly to deny their request for a preliminary injunction.

— Rena Rowe, The Washington Examiner, 3 Oct. 2026

Definition of unlikely

Adjective

The title comes from a phrase that became part of his creative vocabulary and began appearing in sketches whenever an absurd situation called for a perfectly incredulous response.

— Preezy Brown, VIBE.com, 6 Oct. 2026
Girot’s son-in-law, a physician, was incredulous and ordered him to see his primary-care doctor.

— Tim Graham, New York Times, 1 Oct. 2026

Definition of incredulous

Adjective

The technique has revolutionized neuroscience by opening up the brain's activity to scientists in ways previously impossible.

— Jackie Flynn Mogensen, Scientific American, 5 Oct. 2026
These Chargers have 13 games left, and identifying potential wins on the remaining schedule is a nearly impossible task.

— Los Angeles Times, Los Angeles Times, 5 Oct. 2026

Definition of impossible

Adjective

Technology, public taste and economic conditions all contributed to its once-inconceivable drastic makeover.

— Rick Nicita, HollywoodReporter, 30 Sep. 2026
The agent claims to have personally witnessed Foster training for the role at an FBI fingerprinting lab, a coincidence that feels both inconceivable and difficult to invalidate beyond any shadow of a doubt.

— Alex Greenberger, ARTnews.com, 18 Sep. 2026

Definition of inconceivable

Adjective

Independent businesses that once depended on customers walking through their doors gained the opportunity to reach shoppers anywhere, competing with national chains in ways that would have been unimaginable before.

— Dax Dasilva, Fortune, 2 Oct. 2026
Yet somehow, Eric Greenspan has achieved the unimaginable at Mish Delicatessen.

— Jenn Harris, Los Angeles Times, 1 Oct. 2026

Definition of unimaginable

Adjective

But while critics deemed the character overly simplistic and an ultimately unbelievable representation of evil (Cathy is an allegory for the serpent in the garden of Eden, after all), Pugh and Kazan, however, took a very different approach.

— Chris Murphy, Vanity Fair, 30 Sep. 2026
The barking bunch performed unbelievable tricks in sync with music and choreography, leading to their victory.

— Skyler Caruso, PEOPLE, 24 Sep. 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 9 Oct. 2026.

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Synonyms of unthinkable

adjective

Example Sentences

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