δωδεκαταῖος
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)
α, ον,
A on the twelfth day, in twelve days, δ. ἀνεβίω Pl. R.614b, cf. Thphr.HP7.1.3; δυωδεκαταῖος ἀφ' ὧτέ νιν οὐδὲ ποτεῖδον Theoc.2.157. II twelve days old, Hes.Op.751 (in poet. form δυωδ-), Arist.HA567a5.
German (Pape)
[Seite 694] α, ον, u. ep. δυωδ., Hes. O. 749, am zwölften Tage; ἀνεβίω Plat. Rep. X, 614 b; auch Folgde.