εὐσυναλλαξία
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)
ἡ,
A fair dealing, Stoic.3.64,67.
Greek Monolingual
εὐσυναλλαξία, ἡ (Α) ευσυνάλλακτος
η ευθύτητα, η εντιμότητα στις συναλλαγές.