Definitions

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.

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unthinkable

That would have been unthinkable a decade ago.

From Slate ● Sep. 25, 2026

Such a sophisticated effort would have been unthinkable for a private-label brand not long ago.

From MarketWatch ● Sep. 16, 2026

Nearly a week after Sept. 11, he took the extraordinary step — unthinkable for Donald Trump — of visiting a mosque and exhorting people to not use violence.

From Salon ● Sep. 13, 2026

With that in mind, the thought of removing Arteta from that dynamic, certainly for Arsenal's ownership, is the unthinkable.

From BBC ● Sep. 10, 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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