ἀφθεγγής
From LSJ
Ὁ δὲ μὴ δυνάμενος κοινωνεῖν ἢ μηδὲν δεόμενος δι' αὐτάρκειαν οὐθὲν μέρος πόλεως, ὥστε ἢ θηρίον ἢ θεός → Whoever is incapable of associating, or has no need to because of self-sufficiency, is no part of a state; so he is either a beast or a god
English (LSJ)
ές, A speechless, AB 473.
Greek (Liddell-Scott)
ἀφθεγγής: -ές, ὁ μὴ φθεγγόμενος, ἄφωνος, Α. Β. 473, 14.
Spanish (DGE)
-ές mudo, AB 473.