διογκύλλομαι
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)
to be puffed up with pride, Eun.VSp.502B.
Spanish (DGE)
ponerse hueco, engreírse Eun.VS 502, Procl.ad Hes.Op.220.