συσχολαστής
From LSJ
τίκτει γὰρ κόρος ὕβριν, ὅταν πολὺς ὄλβος ἕπηται ἀνθρώποις ὁπ̣όσοις μὴ νόος ἄρτιος ἦι → satiety breeds arrogance whenever men with unfit minds have great wealth
English (LSJ)
οῦ, ὁ,
A school-fellow, fellow-student, Phld.Acad.Ind. p.91 M., D.H.Rh.9.12, Plu.2.47e, BCH32.430 (Delos); σ. τινός Zeno ap.D.L.7.9; τινὸς παρά τινι Str.13.1.67.--The word is noted as not Att. by Phryn.378 and prob. by Thom.Mag.p.337 R. (where codd. have σχολαστάς).