πολυμαθής
From LSJ
Cicero, Tusculanarum Disputationum, I.45.109
English (LSJ)
ές,
A having learnt or knowing much, Ar.V.1175, Democr.64, Pl.Lg.811a: Comp. -έστερος Aristeas 137: Sup. -έστατος Phld.Vit.p.35J.; Ἀριστοτέλης Ath.9.398e, cf. Dam. Isid.168, Lyd.Mag.1.5.