ἀλλ' οὐκ οἰωνοῖσιν ἐρύσσατο κῆρα μέλαιναν → by no augury could he ward off black death
adj.
P. and V. ἄπορος, ἀμήχανος (rare P.). Unconquerable: P. and V. δύσμαχος (Plat.), ἀνίκητος, V. δυσπάλαιστος, Ar. and P. ἄμαχος (Plat.); see unconquerable.