τὸ πεπρωμένον γὰρ οὐ μόνον βροτοῖς ἄφευκτόν ἐστιν, ἀλλὰ καὶ τὸν οὐρανόν ἔχουσι → fate is unavoidable not only for mortals, but also for those who hold the heavens
P. and V. δύσμαχος, ἀνίκητος (Plato), Ar. and P. ἄμαχος (Plato), P. δυσπολέμητος, V. δυσπάλαιστος, ἀπρόσμαχος, ἀδήριτος.
impossible to deal with: P. and V. ἄπορος, ἀμήχανος (rare P.).