potissimum
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
Latin > French (Gaffiot 2016)
pŏtissĭmum¹⁰ (potissimus), adv., principalement, par-dessus tout, de préférence : Cic. Mur. 4 ; Tusc. 5, 11 ; Verr. 2, 4, 70. potissime forme douteuse, Cels. Med. 3, 6.
