a. [ L. inaccessibilis: cf. F. inaccessible. See In- not, and Accessible. ] Not accessible; not to be reached, obtained, or approached; as, an inaccessible rock, fortress, document, prince, etc. -- In`ac*cess"i*ble*ness, n. -- In`ac*cess"i*bly, adv. [ 1913 Webster ]