duumviralis
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 > English (Lewis & Short)
dŭumvĭrālis: e, adj. duumviri,
I of or belonging to a duumvir, duumviral.
I Adj.: POTESTATE, Inscr. Fabr. p. 29, 129.— More freq.,
II Subst.: duumviralis, is, m., one who has been a auumvir, Dig. 50, 3, 1; Inscr. Orell. 3727; 3816.