inscrutable

[ in-skroo-tuh-buhl ]
/ ɪnˈskru tə bəl /

adjective

incapable of being investigated, analyzed, or scrutinized; impenetrable.
not easily understood; mysterious; unfathomable: an inscrutable smile.
incapable of being seen through physically; physically impenetrable: the inscrutable depths of the ocean.

Origin of inscrutable

First recorded in 1400–50; late Middle English word from Late Latin word inscrūtābilis. See in-3, scrutable

Related forms

in·scru·ta·bil·i·ty, in·scru·ta·ble·ness, nounin·scru·ta·bly, adverb

Synonym study

1. See mysterious.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for inscrutable

British Dictionary definitions for inscrutable

inscrutable

/ (ɪnˈskruːtəbəl) /

adjective

incomprehensible; mysterious or enigmatic

Derived Forms

inscrutability or inscrutableness, nouninscrutably, adverb

Word Origin for inscrutable

C15: from Late Latin inscrūtābilis, from Latin in- 1 + scrūtārī to examine
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012