Impassible
Pronunciation : Im*pas"si*ble
Part of Speech : a.
Etymology : [L. impassibilis; pref. im- not + passibilis passable: cf. F. impassible. See Passible.]
Definition : Defn: Incapable of suffering; inaccessible to harm or pain; not to be touched or moved to passion or sympathy; unfeeling, or not showing feeling; without sensation. "Impassible to the critic." Sir W. Scott. Secure of death, I should contemn thy dart Though naked, and impassible depart. Dryden.
Source : Webster's Unabridged Dictionary, 1913