시긔 (sìkùy, “period, time”, from Middle Chinese 時期 (MC dzyi gi)) + ㅅ (-s, “of”, genitive marker) + 벼ᇰ〯 (pyěng, “disease”, from Middle Chinese 病 (MC bjaengH)): "disease of the time".
시긧벼ᇰ〯 (sìkùy-s pyěng)