inscrutable

adjective

in·​scru·​ta·​ble in-ˈskrü-tə-bəl How to pronounce inscrutable (audio)
: not readily investigated, interpreted, or understood : mysterious
an inscrutable smile
inscrutable motives
inscrutability noun
inscrutableness noun
inscrutably adverb

Did you know?

Scrutinizing the inscrutable may be futile: even close scrutiny can fail to decipher it. Scrutinizing the scrutable, on the other hand, is likely to yield some understanding. All of these scrut- words have the same Latin root: scrutari, meaning “to search or examine.” While scrutiny, scrutinize, and inscrutable all prove themselves useful in everyday discourse, English speakers don’t tend to call much on scrutable, which functions as a synonym of comprehensible.

Examples of inscrutable in a Sentence

Supersymmetry is a magic mirror, and everything in what we imagine to be the real world has its ghostly, inscrutable mirror image. Ian Stewart, Prospect, September 2003
Of all the myths that have grown up around Alan Greenspan, the most powerful is the idea that he's willfully inscrutable. James Surowiecki, New Yorker, 22 Jan. 2001
That wily politicians might adopt Franklin's distinction between appearance and reality to become inscrutable confidence men did not seem to trouble him. John H. Summers, Journal of American History, December 2000
an inscrutable work of art He was a quiet, inscrutable man.
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.
Most people have a sense that legal principles and arguments are relatively inscrutable to the average Joe. New York Daily News Editorial Board, New York Daily News, 30 May 2025 Smartphones have already absorbed us in our screens, creating personalized information bubbles; omnipresent A.I. will only intensify that atomization while being more automated, more inscrutable, and more inescapable. Kyle Chayka, New Yorker, 28 May 2025 Everywhere in music, these incongruous expectations breed inscrutable and immutable stars. Craig Jenkins, Vulture, 20 May 2025 In some such cases, the motives of the killer are inscrutable or muddy; not so here, where the killer was open about his extreme racist views, including in a manifesto that largely parroted white supremacist hate on immigration. New York Daily News Editorial Board, New York Daily News, 19 May 2025 See All Example Sentences for inscrutable

Word History

Etymology

Middle English, from Late Latin inscrutabilis, from Latin in- + scrutari to search — more at scrutiny

First Known Use

15th century, in the meaning defined above

Time Traveler
The first known use of inscrutable was in the 15th century

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Cite this Entry

“Inscrutable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/inscrutable. Accessed 5 Jun. 2025.

Kids Definition

inscrutable

adjective
in·​scru·​ta·​ble in-ˈskrüt-ə-bəl How to pronounce inscrutable (audio)
: not easily understood : mysterious
an inscrutable expression
inscrutably adverb

More from Merriam-Webster on inscrutable

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