συμμαθητής
From LSJ
οὕτω τι βαθὺ καὶ μυστηριῶδες ἡ σιγὴ καὶ νηφάλιον, ἡ δὲ μέθη λάλον → silence is something profound and mysterious and sober, but drunkenness chatters
English (LSJ)
οῦ, ὁ,
A fellow-disciple, schoolfellow, Pl.Euthd.272c, Gal. 12.835, Ps.-Callisth.1.13; ἐγένονθ' ἑαυτῶν συμμαθηταὶ τῆς τέχνης fellow-pupils in the art, Anaxipp.1.2.