δυσπεριαίρετος
From LSJ
Τὸ νικᾶν αὐτὸν αὑτὸν πασῶν νικῶν πρώτη τε καὶ ἀρίστη. Τὸ δὲ ἡττᾶσθαι αὐτὸν ὑφ' ἑαυτοῦ πάντων αἴσχιστόν τε ἅμα καὶ κάκιστον. → Τo conquer yourself is the first and best victory of all, while to be conquered by yourself is of all the most shameful as well as evil
English (LSJ)
ον, A hard to strip off, peel, φλοιός prob. in Thphr.HP 5.1.1.
Spanish (DGE)
-ον
que se desprende con dificultad, difícil de quitar la corteza de los árboles, Thphr.HP 5.1.1 (cj. en ap. crít., cf. δυσπερικάθαρτος).