εὐθυθάνατος
From LSJ
κρῖναι δὲ λόγῳ πολύδηριν ἔλεγχον ἐξ ἐμέθεν ῥηθέντα → judge by reason the too much contested argument which has been given by me
English (LSJ)
[θᾰ], ον,
A quick-killing, mortal, πληγή Plu.Ant.76.
German (Pape)
[Seite 1070] sogleich tödtend, πληγή, Plut. Ant. 76.
Greek (Liddell-Scott)
εὐθυθάνατος: -ον, ταχέως φονεύων, θανάσιμος, πληγὴ Πλουτ. Ἀντών. 76.