πάρεργον πάρ-εργον, ου, τό, a bye-work, subordinate or secondary business, appendage, appendix, Eur.; πάρεργʼ ὁδοῦ a secondary purpose of my journey, Eur.; π. τύχης an unhappy addition to my fortune, Eur.; πάρεργα κακῶν things useless to remedy my ills, Eur.:— ἐν παρέργῳ as a bye-work, as subordinate or secondary, Lat. obiter, ἐν π. θέσθαι to treat as a bye-work, Soph.; ὡς ἐν π. Eur.; ἐκ παρέργου Thuc.