εἰσηγητής
From LSJ
Έγ', ὦ ταλαίπωρ', αὐτὸς ὧν χρείᾳ πάρει. Τὰ πολλὰ γάρ τοι ῥήματ' ἢ τέρψαντά τι, ἢ δυσχεράναντ', ἢ κατοικτίσαντά πως, παρέσχε φωνὴν τοῖς ἀφωνήτοις τινά –> Wretched brother, tell him what you need. A multitude of words can be pleasurable, burdensome, or they can arouse pity somehow — they give a kind of voice to the voiceless.
English (LSJ)
οῦ, ὁ,
A one who brings in, author, τῶν κακῶν τῷ δήμῳ Th.8.48, cf. Hyp.Epit.3, Arist.Ath.27.4, Aeschin.1.172, Ph. 1.103, al., Luc.Anach.14, etc.