Dictionary entry

σύνζυγος

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament

** σύν-ζυγος (Rec. ουζ-), or as WH, mg., Σύνζυγος, -ον

(< συνζεύγνυμι), [in Aq., Ez 23:21 *;]

a yoke fellow. Prob., as proper name, Σ. γνήσιε, genuinely Synzygus, S. properly so-called, Phl 4:3 (v. ICC, Lft., in l.; MM, xxiii).†