συναλλακτής
From LSJ
τίς γὰρ ἁδονᾶς ἄτερ θνατῶν βίος ποθεινὸς ἢ ποία τυραννίς; τᾶς ἄτερ οὐδὲ θεῶν ζηλωτὸς αἰών → What human life is desirable without pleasure, or what lordly power? Without it not even the life of the gods is enviable.
English (LSJ)
οῦ, ὁ,
A mediator, negotiator, Id. II an official concerned with the tax on sales (?), POxy.43vii 4, al. (iii A.D.).
German (Pape)
[Seite 998] ὁ, der Verkehr mit Einem hat, Handel mit ihm treibt, Sp.