παρεμπορεύομαι
From LSJ
ὅτι μέντοι καὶ ἡ χρῆσις τῶν τρόπων, ὥσπερ τἆλλα πάντα καλὰ ἐν λόγοις, προαγωγὸν ἀεὶ πρὸς τὸ ἄμετρον, δῆλον ἤδη, κἂν ἐγὼ μὴ λέγω → however, it is also obvious, even without my saying so, that the use of figures of speech, like other literary adornments, is something that has always tempted toward excess
English (LSJ)
A traffic in besides : metaph., μικρὰ π. τῆς ἀφροδίτης Alciphr.Fr.6.16 ; τὸ τερπνὸν π. yield delight besides instruction, Luc.Hist.Conscr.9.
German (Pape)
[Seite 515] nebenbei womit handeln; übertr., nebenher verschaffen od. gewähren, ἡ ἱστορία εἰ μὲν ἄλλως τὸ τερπνὸν παρεμπορεύσαιτο, d. i. neben der Belehrung auch Ergötzung gewähren, Luc. hist. conscr. 9.