κακοτροπέω
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)
A become malignant, of ulcers, Hp.Mul.1.38.
German (Pape)
[Seite 1304] von schlechtem Charakter sein, tückisch handeln, Hippocr.