LSJ
ον, dub.sens. in Phld. D. 3. Fr. 19 (perh.
consisting entirely of soul) ; with his whole soul, Eust. 1901.43. Adv. -χως Suid. s.v. ἐκτενῶς.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
Pape
[ῡ], mit ganzer Seele, Eust. u. a.Sp.
Pape, Griechisch-deutsches Handwörterbuch (3. Aufl., 1914)