Scepsis n. Skepticism; skeptical philosophy. (R.) "Among their products were the system of Locke, the scepsis of Hume, the critical philosophy of Kant."
... pre-Socratic tendency of the Sceptical School. The name of Socrates was all powerful in the Academy, but Aenesidemus comprehended the fact that the true spirit of Pyrrhonism was of earlier origin than the Academic Scepsis. ... — Sextus Empiricus and Greek Scepticism • Mary Mills Patrick