δυσάλγητος
From LSJ
εἰ δὲ τύχῃ τις ἔρδων, μελίφρον' αἰτίαν ῥοαῖσι Μοισᾶν ἐνέβαλε → if someone is successful in his deeds, he casts a cause for sweet thoughts into the streams of the Muses
English (LSJ)
ον,
A hard to be borne, most painful, Eup. 410. II unfeeling, hard-hearted, S.OT12; δειλὸς ἢ δ. φρένας Id.Fr.952.
German (Pape)
[Seite 675] 1) unempfindlich, Soph. O. R. 12. – 2) sehr schmerzlich, Eupolis bei Poll. 3, 130.