Vengeance

So with ἀμῡ́νεσθαι and κολάζειν punish, εἰσάγειν and προσκαλεῖσθαι summon into court, αἱρεῖν convict, τῑμωρεῖσθαι take vengeance on. With τῑμωρεῖν avenge and λαγχάνειν obtain leave to bring a suit, the person avenged and the person against whom the suit is brought are put in the dative. So with δικάζεσθαί τινί τινος to go to law with a man about something.