*scepsi*

‖n. [ NL., from Gr. &unr_; doubt, fr. &unr_; to consider: cf. G. skepsis. See Skeptic. ] Skepticism; skeptical philosophy. [ R. ] [ 1913 Webster ]

Among their products were the system of Locke, the scepsis of Hume, the critical philosophy of Kant. J. Martineau. [ 1913 Webster ]