The Collaborative International Dictionary of English v.0.48:

Impatible \Im*pat"i*ble\, a. [L. impatibilis; pref. im- not +
   patibilis supportable. See Patible.]
   1. Not capable of being borne; impassible.
      [1913 Webster]

            A spirit, and so impatible of material fire.
                                                  --Fuller.
      [1913 Webster]