τέθναμεν

From LSJ

Καὶ μὴν ὑπεραποθνῄσκειν γε μόνοι ἐθέλουσιν οἱ ἐρῶντες, οὐ μόνον ὅτι ἄνδρες, ἀλλὰ καὶ αἱ γυναῖκες. → After all, it is only those in love who are actually willing to die for another — not just men, but women as well. (Plato, Symposium 179b)

Source

French (Bailly abrégé)

1ᵉ pl. pf. sync. de θνῄσκω.

Russian (Dvoretsky)

τέθνᾰμεν: 1 л. pl. pf. к θνῄσκω.