αἰᾶ · aia — Beekes
αἰᾶ νής [adj.| ‘horrible’ (Archil.); the mg. ‘eternal’ (A.) through association with » αἰεί. > *VAR Ion. αἰηνής. *ETYM There is a speculative hypothesis by Wackernagel 1897: 7, who assumed the reconstruction *oatp-avij¢ ‘with terrifying face’ (whence Lat. saevus, the word for ‘face’ seen in » ἀπηνής, etc.). See Degani Helikon 2 (1962): 37-56. — [Beekes, s.v. αἰᾶ, p. 78]