σπερμαίνω
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)
A sow with seed, fertilize, of the Nile, Plu.2.366a; of the male, Horap.2.115: c. acc. cogn., σ. σπέρμα Aq., Thd.Ge.1.29. 2 metaph., procreate, σ. γενεήν Hes.Op.736, cf. Call.Fr.207: abs., Arist.Pr.876b39:—Med., Nonn.D.3.295.