[in-skroo-tuh-buh
l] 
| 1. | incapable of being investigated, analyzed, or scrutinized; impenetrable. |
| 2. | not easily understood; mysterious; unfathomable: an inscrutable smile. |
| 3. | incapable of being seen through physically; physically impenetrable: the inscrutable depths of the ocean. |
| in·scru·ta·ble (ĭn-skrōō'tə-bəl) adj. Difficult to fathom or understand; impenetrable. See Synonyms at mysterious. [Middle English, from Old French, from Late Latin īnscrūtābilis : in-, not; see in-1 + scrūtārī, to scrutinize; see scrutiny.] in·scru'ta·bil'i·ty, in·scru'ta·ble·ness n., in·scru'ta·bly adv. |