συνναίω
From LSJ
οὕτως ἐξ ἐχθρῶν αὐτοκτόνα πέμπετο δῶρα, ἐν χάριτος προφάσει μοῖραν ἔχοντα μόρου → thus mutual gifts that bring death were bestowed by enemies, gifts that brought the lot of death in the name of a favor
English (LSJ)
A dwell or live with, γυναιξί A.Th.195; τοῖσιν ἐχθίστοισι σ. ὁμοῦ S.Tr.1237, cf. El.241 (lyr.).