1.to fall differently, undergo a change, μ. τὸ εἶδος Hdt., or εἰς ἄλλο εἶδος Plat.: also, to change one's opinion suddenly, Eur., Ar.; εἰ τρεῖς μόναι μετέπεσον τῶν ψήφων Plat.
2.to change, esp. for the worse, μεταπίπτοντος δαίμονος if fortune changes, Eur.; rarely for the better, id=Eur.:—of political changes, to undergo change or revolution, Thuc.