ἀμφιμέλας
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)
-μέλαινα, -μέλᾰν,
A black all round: Hom. always epith. of φρένες (best written divisim, as by Alex. critics), darkened on either side, of strong emotions, as anger, Il.1.103, 17.83, Od.4.661; courage, Il.17.499,573: prob. metaph. from an angry sea. 2 generally, ἀ. κόνις coal-black dust, AP7.738 (Theodorid.).