δυσίατος
From LSJ
καὶ ὑποθέμενος κατὰ τῆς κεφαλῆς φέρειν τὰς πληγάς, ὡς ἐν ἐκείνῃ τοῦ τε κακοῦ τοῦ πρὸς ἀνθρώπους → and having instructed them to bring their blows against the head, seeing that the harm to humans ... (Josephus, Antiquities of the Jews 1.50)
English (LSJ)
Ion. δῠσ-ίητος [ι], ον,
A hard to heal, κληΐς Hp.Art.14 (Comp.), cf. Cass.Pr.1 (Comp.); κακὸν δ. an ill that none can cure, A.Ag.1103 (lyr.); ὀργή E.Med.520; νόσημα Pl.Lg.916a, cf. Ph.1.40, al.; of persons, implacable, Them.Or.15.192c. Adv. -τως, μόριον πεπονθὸς δ. Gal.18(2).273.
German (Pape)
[Seite 681] schwer zu heilen, unheilbar; κακόν Aesch. Ag. 1103; ὀργή Eur. Med. 520; νόσημα Plat. Legg. XI, 916 a; θυμοί 934 a; ἀδικήματα V, 731 b.