προεξαγκωνίζω
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)
as a pugilistic term,
A spar before beginning to fight: hence metaph., of a speaker, οὐδὲν προεξαγκωνίσας οὐδὲ προανακινήσας εὐθὺς ἄρχεται Arist.Rh.1416a2.