πολυμαθής
From LSJ
ταῦτα δὲ ἔδει ποιῆσαι κἀκεῖνα μὴ ἀφιέναι → these things should have been done without neglecting the others | these are the things you should have done without neglecting the others | these ought ye to have done, and not to leave the other undone
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.
German (Pape)
[Seite 666] ές, viel gelernt habend, viel wissend; Ar. Vesp. 1175; Plat. Legg. VII, 810 e; Xen. Mem. 4, 4, 6; Isocr. 1, 18; superl. πολυμαθέστατος Luc. Philopatr. 13; Ath. XV, 596 a, wie Aristoteles.