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
But football has repeatedly embraced innovations once viewed as unthinkable, from the back-pass rule to VAR and longer stoppage time.
—
Andrew Greif,
NBC news,
3 July 2026
Once unthinkable, Iran now knows how to make money by blocking access to the crucial waterway, and despite the treaty talks, is already making plans to do so.
—
Sun Sentinel Editorial Board,
Sun Sentinel,
29 June 2026
Since then, mass shootings of this scale have been almost unthinkable.
—
Oscar Schwartz,
New Yorker,
29 June 2026
In the case of massive grid sabotage, AI could compound the chaos and lead to a starvation of city-dwellers unthinkable in modern times.
—
Simon Sebag Montefiore,
The Atlantic,
28 June 2026
See All Example Sentences for unthinkable
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Andrew Greif,
NBC news,
3 July 2026
Once unthinkable, Iran now knows how to make money by blocking access to the crucial waterway, and despite the treaty talks, is already making plans to do so.
—
Sun Sentinel Editorial Board,
Sun Sentinel,
29 June 2026
Since then, mass shootings of this scale have been almost unthinkable.
—
Oscar Schwartz,
New Yorker,
29 June 2026
In the case of massive grid sabotage, AI could compound the chaos and lead to a starvation of city-dwellers unthinkable in modern times.
—
Simon Sebag Montefiore,
The Atlantic,
28 June 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 6 Jul. 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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