unthinkable

[uhn-thing-kuh-buhl] / ʌnˈθɪŋ kə bəl /

ADJECTIVE

incredible, unusual

Synonyms

STRONGEST

absurd extraordinary illogical implausible impossible improbable inconceivable preposterous rare unbelievable uncommon unimaginable unlikely unreasonable

WEAK

beyond belief beyond possibility exceptional incogitable insupportable out of the question outlandish singular unique unordinary

Antonyms

STRONGEST

believable cheap common familiar imaginable likely logical normal ordinary plausible possible probably rational reasonable regular sensible tenable usual

WEAK

conceivable credible

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

European Union ministers are debating whether to boost oil and gas production in the region, which would have been unthinkable a few years ago.

From The Wall Street Journal • Jun. 9, 2026

E. Jean Carroll achieved the unthinkable and might end up paying a price for it.

From Slate • Jun. 1, 2026

Such a close contest would have been unthinkable two years ago.

From Los Angeles Times • Jun. 1, 2026

After the chaotic ouster of Altman in late 2023, OpenAI’s board met with Anthropic to discuss a deal that now sounds unthinkable.

From The Wall Street Journal • May 18, 2026

I was fond of Francis and Henry but it was unthinkable that anything should happen to the twins.

From "The Secret History" by Donna Tartt

unthinkable

Example Sentences

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