χυδαιότης
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)
ητος, ἡ,
A vulgarity, Jul.Gal.43b, 238b.
German (Pape)
[Seite 1384] ἡ, Gemeinheit, bes. des Ausdrucks, Phot. bibl. cod. 196.