descisco

dē-scīscō īvī, ītus, ere,

to withdraw, leave, revolt from, desert, go over: ab Afranio, Cs.: a populo: quibus invitis descitum ad Samnites erat, L.: aperte, L.—In gen., to depart, deviate, withdraw, fall off, be unfaithful: a se ipse: cur Zeno ab hac antiquā institutione desciverit: a naturā, N.: a vitā, kill oneself.