ἀποπροτέμνω
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 cut off from, νώτου ἀποπροταμών after he had cut a slice from the chine, Od.8.475, cf. Nic.Th.572.