\Im*pas"si*ble\, a. [L. impassibilis; pref. im- not +
passibilis passable: cf. F. impassible. See {Passible}.]
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.