LSJ
make firm or fast, Elias in Porph. 118.31; — Pass., EM 646.45; ἐπαγιώθη it was resolved, Men. Prot. p. 23 D.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
Pape
fest, dauerhaft machen, EM. 646.45.
Pape, Griechisch-deutsches Handwörterbuch (3. Aufl., 1914)