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.

"On one hand, it would have been unthinkable a few months ago that Jodar could even be competing in a Grand Slam," Spanish tennis journalist Alejandro Ciriza told BBC Sport.

From BBC • Jun. 1, 2026

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

From Slate • Jun. 1, 2026

They point to domains where unthinkable technological advances have improved human performance, from Go players to chess grandmasters.

From The Wall Street Journal • May 30, 2026

But it turns out what was really unthinkable was Ferrell getting all 10 nuggets down the hatch before the Six Flags ride was over.

From Los Angeles Times • May 29, 2026

A month ago it would have been unthinkable to drink coffee at nine p.m.

From "The Martian" by Andy Weir

unthinkable

Example Sentences

Related Words