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

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.
Recent Examples on the Web
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.
Going to the rink felt unimaginable. Los Angeles Times, 10 Feb. 2026 Russia’s attack on Ukraine has made a return to his birthplace unimaginable. Boris Fishman, Travel + Leisure, 8 Feb. 2026 Stuck at Boston Children’s Hospital, facing unimaginable health challenges, a 12-year-old Chelmsford boy received hope from Patriots running back TreVeyon Henderson. Lance Reynolds, Boston Herald, 7 Feb. 2026 Alan Ritchson faces an unimaginable threat in the trailer for Netflix‘s sci-fi feature War Machine. Ryan Gajewski, HollywoodReporter, 4 Feb. 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

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Cite this Entry

“Unimaginable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unimaginable. Accessed 16 Feb. 2026.

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