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Showing results for unthinkable. Search instead for unthinkabil.
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.

A big reason is psychological: It takes lots of evidence to convince people something unthinkable might be about to happen like major banks collapsing, a pandemic or actual fuel shortages.

From The Wall Street Journal • Apr. 7, 2026

For many, the idea of filming and broadcasting such intimate moments, including the actual birth of their child, would be unthinkable.

From BBC • Apr. 4, 2026

Or it may need to consider the unthinkable.

From The Wall Street Journal • Apr. 4, 2026

"And it is unthinkable - but those thoughts demand to be thought and I will not hide my face. But she needs to come home now."

From BBC • Mar. 25, 2026

It would have been unthinkable to squander two activities on the same bit of time!

From "The Hiding Place" by Corrie ten Boom

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.