εἰρωνικός
From LSJ
φιλοσοφίαν καινὴν γὰρ οὗτος φιλοσοφεῖ → this man adopts a new philosophy
English (LSJ)
ή, όν,
A dissembling: hence, hollow, insincere, Pl.Sph. 268a; τὸ εἰ. εἶδος Id.Lg.908e; εἰρωνικόν τι ὑπομειδιάσας Hld.10.14. Adv. -κῶς mockingly, Ar.V.174, Pl.Smp.218d, etc.
German (Pape)
[Seite 736] ironisch; μιμητής Plat. Soph. 268 a; τὸ εἰρωνικόν, Heuchelei, Legg. X, 908 e. – Adv., Ar. Vesp. 174; λέγειν, Plat. Conv. 218 d u. öfter.