δίκυκλος
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)
[ῐ], ον,
A two-wheeled, ὄχημα Lib.Or.1.33; δ. [ἅρμα] two-wheeled car, D.C.76.7.