In′con‐ceiv″a‐ble (?), a. [Pref. in- not + conceivable: cf. F. inconcevable.] Not conceivable; incapable of being conceived by the mind; not explicable by the human intellect, or by any known principles or agencies; incomprehensible; as, it is inconceivable to us how the will acts in producing muscular motion.
It is inconceivable to me that a spiritual substance should represent an extended figure. Locke.
— In′con‐ceiv″a‐ble‐ness, n. — In′con‐ceiv″a‐bly, adv.
The inconceivableness of a quality existing without any subject to possess it. A. Tucker.