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.
adjective
- incomprehensible; mysterious or enigmatic
c.1500, from Late Latin inscrutabilis, from in- “not, opposite of” (see in- (1)) + scrutabilis, from scrutari “examine, ransack” (see scrutiny). Related: Inscrutably.