ἀκρόσοφος
From LSJ
αὐτὸν κέκρουκας τὸν βατῆρα τοῦ λόγου → you have struck the very threshold of the argument, you have struck the most important and chiefmost point
English (LSJ)
ον,
A high in wisdom, Pi.O.11 (10).19, Lyr.Adesp.93, D.H.Dem.51.
German (Pape)
[Seite 85] hochweise, Pind. Ol. 10, 19; Dion. Hal. Dem. 51; p. bei Plut. Non posse 13.