unimaginable

adjective

un·​imag·​in·​able
ˌən-ə-ˈmaj-nə-bəl, 
-ˈma-jə- How to pronounce unimaginable (audio)
Synonyms of unimaginablenext
: not imaginable or comprehensible
unimaginable horror
technology that was unimaginable only a few years ago
unimaginably
ˌən-ə-ˈmaj-nə-blē, 
-ˈma-jə How to pronounce unimaginable (audio)
adverb

Synonyms of unimaginable

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Examples of unimaginable in a Sentence

the unimaginable horrors of war a disaster of almost unimaginable proportions This technology would have been unimaginable five years ago.
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Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Friends struggled to come to terms with how, in the span of around two years, McCollough developed a once-unimaginable addiction to ketamine. — Cheyenne Roundtree, Rolling Stone, 20 Aug. 2026 The federal government has continued to print and spend unimaginable amounts of money, even though households and companies own most of the country’s wealth. — Dave Birnbaum, Forbes.com, 18 Aug. 2026 Set in 1935, amidst the Great Depression, Season 2 revolves around the bloody massacre of the Bradley Gang, a group of bank robbers who stop in Derry to buy ammo and end up facing unimaginable horror. — Matt Grobar, Deadline, 17 Aug. 2026 Like a mass awakening, labels and executives began courting them, making offers that were unimaginable just a few years earlier. — Morena Duwe, Los Angeles Times, 17 Aug. 2026 See All Example Sentences for unimaginable

Word History

First Known Use

1611, in the meaning defined above

Time Traveler
The first known use of unimaginable was in 1611

Rhymes for unimaginable

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Browse Nearby Words

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unimaginable
unimaginative
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Cite this Entry

“Unimaginable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unimaginable. Accessed 25 Aug. 2026.

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More from Merriam-Webster on unimaginable

Nglish: Translation of unimaginable for Spanish Speakers

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