inapprehensible

Either from the Late Latin inapprehensibilis or formed in English as in- +‎ apprehensible.

• (Received Pronunciation) enPR: ĭnăprĭhĕnʹsĭbl, IPA^(key): /ɪnæpɹɪˈhɛnsɪbl/

inapprehensible (not comparable)

1. That cannot be apprehended; not apprehensible to or graspable by either body or mind.

• inapprehensibility

• “inapprehensible, a.” listed in the Oxford English Dictionary [2^nd Ed.; 1989]