LSJ
ον, gen. ονος, (< σκῶμμα) of ready wit, esp. in bantering or repartee, Poll. 5.161, Lib. Decl. 15.25. Adv. -μόνως Poll. 5.161.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
Pape
ον, gut, leicht spottend, witzig, Hdn. Philet. p. 442.
Pape, Griechisch-deutsches Handwörterbuch (3. Aufl., 1914)