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.
The idea of a late style in rock and roll would have been unimaginable during the 1960s and early ’70s, the era that Windolf primarily recounts. David L. Ulin, The Atlantic, 11 May 2026 All of them are now in college, mourning the unimaginable loss of their friend with the unforgettable laugh. Charlie De Mar, CBS News, 11 May 2026 Simply being unhoused is an unimaginable nightmare. Michael Perkins, The Orlando Sentinel, 10 May 2026 Over the past century, American innovation has transformed healthcare, turning once-unimaginable ideas into lifesaving realities for patients around the world. Joaquin Duato, Fortune, 9 May 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 May. 2026.

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