μεμπτός
From LSJ
τὸ γὰρ εὖ πράττειν παρὰ τὴν ἀξίαν ἀφορμὴ τοῦ κακῶς φρονεῖν τοῖς ἀνοήτοις γίγνεται → undeserved success engenders folly in unbalanced minds
English (LSJ)
ή, όν,
A blameworthy, E.Hel.462, Phld.Oec.p.70 J.: Comp. μεμπτότερος Th.2.61: mostly with a neg., Pi.Fr.220, S.OC1036, Th.3.57, etc.; οὐ μ. not contemptible, Id.6.13, Pl.Tht.187c; in a question, Hdt.7.48. Adv., οὐδὲ τῶν ξένων μεμπτῶς μαχεσαμένων Plu.Cleom.28. II Act., throwing blame upon, τινι S.Tr.446, where μεμπτός is fem.