ὠμόθυμος
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)
ον,
A savage-hearted, S.Aj.885 (lyr.), Ph.2.15, al.
Greek (Liddell-Scott)
ὠμόθῡμος: -ον, ὁ ἔχων ἀγρίαν ψυχήν, Σοφ. Αἴ. 885, Φίλων 2. 15, κλπ.