σύνθακος

ον
A. sitting with or together, ἔστι γὰρ Ζηνὶ ς. θρόνων Αἰδώς partner of his throne, S. OC 1267.
2. generally, partner, E. Or. 1637, Hipp. 1093.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project