βαθύχειλος
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
Spanish (DGE)
-ον
de lengua profunda tal vez incomprensible λαὸν βαθύχειλον καὶ βαρύγλωσσον LXX Ez.3.5, cf. Aq., Thd., Sm.Ez.3.6, Cyr.Al.M.71.628C.