ἐπαγανακτέω
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)
A to be indignant, abs., J.BJ2.13.3, Plu.Alc.14, Ages. 19.
German (Pape)
[Seite 892] darüber unwillig werden, zürnen, Plut. Alc. 14 Agesil. 19 u. a. Sp.
Greek (Liddell-Scott)
ἐπᾰγᾰνακτέω: ἀγανακτῶ κατά τινος ἢ διά τι, Πλουτ. Ἀλκ. 14. Ἀγησ. 19, Ἰωσήπου Ἰουδ. Ἀρχ. 2. 13, 3, κλ.