ἀδιάσχιστος
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 not cloven, Arist.HA532b13.
Greek (Liddell-Scott)
ἀδιάσχιστος: -ον, ὁ μὴ διασχισθείς, Ἀριστ. Ἱ. Ζ. 7. 4.12.