Lewis Short
(adj.adv.) = ἠθικός: ēthĭcus, a, um, (scanned ĕthĭcīs, Prud. Hamart. 583), adj.
* Moral, ethic (post-class.): res,ethics,Gell. 1, 2, 4: dictio,which shows the character,Sid. Ep. 8, 11.— Hence adv.: ēthĭcos = ἠθικῶς, morally: dicere,Sen. Contr. 2, 12, 8.
Charlton T. Lewis, Charles Short, A Latin Dictionary