Synonyms of inscrutable
: not readily investigated, interpreted, or understood : mysterious
an inscrutable smile
inscrutable motives

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.
But, practically speaking, none of it is imaginable or executable without digital technologies that are fundamentally black-boxed, inscrutable to individual cops on the beat and institutional decision-makers alike. Literary Hub, 24 Aug. 2026 Up in the directors’ box, sporting director Andrea Berta wore an inscrutable expression as the game flowed. Amy Lawrence, New York Times, 22 Aug. 2026 The sums are vast, but the explanations for the spending range from vague to inscrutable. Jesse Coburn, ProPublica, 19 Aug. 2026 The paper makes significant progress on an unresolved aspect of the inscrutable math equation that determines how the primes are distributed along the number line. Joseph Howlett, Scientific American, 12 Aug. 2026 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

Browse Nearby Words

Cite this Entry

“Inscrutable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/inscrutable. Accessed 1 Sep. 2026.

Kids Definition

inscrutable

adjective
: not easily understood : mysterious
an inscrutable expression
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