free will
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 > Greek (Woodhouse)
substantive
of one's own free will: use adj., P. and V. ἑκών, αὐτεπάγγελτος, ἐθελοντής (Sophocles, Ajax 24), P. ἑκώνγε εἶναι.