avivartacaryA
avivarta-caryā (= avaivarta-, anivartana-caryā ), course that is not liable to turning back (backsliding): Mv i.63.13 . The text explains by vivartanti saṃsaranti vivartacaryā ( cf. vivarta , world-evolution ); but I agree with Senart , note on i.1.3 , that this is mere fantasy and wholly misleading.