πολὺ νικᾶν
From LSJ
τοῦ θανόντος ἡ Δίκη πράσσει κότον → Justice seeks the grievance for the dead, Justice doth exact the dead man's due
Greek > English (Woodhouse)
gain a decided victory, win a crushing victory, win a decisive victory, win a great victory, win a signal victory, win an overwhelming victory