Source : Webster's Revised Unabridged Dictionary (1913)

Scepsis \Scep"sis\, n. [NL., from Gr. ? doubt, fr. ? to
   consider: cf. G. skepsis. See {Skeptic}.]
   Skepticism; skeptical philosophy. [R.]

         Among their products were the system of Locke, the
         scepsis of Hume, the critical philosophy of Kant. --J.
                                                  Martineau.