ἀτρεμαιότης
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 calmness, Hp.Praec.13.
Greek Monolingual
ἀτρεμαιότης, η (Α) ατρεμαίος
ηρεμία, σταθερότητα.