βοὴν ἀγαθός
From LSJ
εἰς πέλαγος σπέρµα βαλεῖν καὶ γράµµατα γράψαι ἀµφότερος µόχθος τε κενὸς καὶ πρᾶξις ἄκαρπος → throwing seeds and writing letters at sea are both a vain and fruitless endeavor
Greek to English
good at the war cry, good at the battle-cry, master of the war-cry, good at shouting
Spanish
bueno para lanzar el grito de guerra, valiente en el combate