unthinkable
adjective
un·think·able
ˌən-ˈthiŋ-kə-bəl 
1
: not capable of being grasped by the mind
2
: being contrary to what is reasonable, desirable, or probable : being out of the question
Examples of unthinkable in a Sentence
to most people it seemed unthinkable that such a gentle man could be guilty of such awful crimes
Recent Examples on the Web
What once felt unthinkable or despicable gradually becomes normal.
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Literary Hub, 21 May 2026
Over the past century, heart operations that once were unthinkable have become commonplace, thanks to the Philly invention that's saving lives.
—Stephanie Stahl, CBS News, 20 May 2026
In sports, this would be unthinkable.
—Brian Tuite, Forbes.com, 20 May 2026
Many of the ways people share data with Google today would have been unthinkable 10 or 15 years ago.
—ArsTechnica, 19 May 2026
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Literary Hub, 21 May 2026
Over the past century, heart operations that once were unthinkable have become commonplace, thanks to the Philly invention that's saving lives.
—Stephanie Stahl, CBS News, 20 May 2026
In sports, this would be unthinkable.
—Brian Tuite, Forbes.com, 20 May 2026
Many of the ways people share data with Google today would have been unthinkable 10 or 15 years ago.
—ArsTechnica, 19 May 2026
See All Example Sentences for unthinkable
Cite this Entry
“Unthinkable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unthinkable. Accessed 28 May. 2026.
Copy CitationKids Definition
unthinkable
adjective
un·think·able
ˌən-ˈthiŋ-kə-bəl
ˈən-
: not to be thought of or considered as possible
unthinkable cruelty
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