In-seru'ta-ble, a.

a. [Prefix in, not, and scrutable; Lat. inscrutabilis, Fr. & Sp. inscrutable, It. inscrutable.]

1. Incapable of being searched into and understood by inquiry or study; unsearchable; impenetrable; as, the designs of the emperor appear to be inscrutable.
2. Incapable of being discovered, or understood by human reason; incapable of being satisfactorily accounted for, explained, or answered. “Waiving a question so inscrutable as this.” De Quincey.