γλωσσοθάνατος

From LSJ

ταῦτα δηλώσω αὐτός τε νοσήσας καὶ αὐτὸς ἰδὼν ἄλλους πάσχοντας → I shall describe those symptoms, since I myself had the disease and witnessed as well what others were suffering

Source

Spanish (DGE)

-ον
de lengua de muerte, falaz, embustero εἰπέ μοι, γλωσσοθάνατε Iul.Ar.255.19.