ὁμοβουλέω
From LSJ
εἰς πέλαγος σπέρµα βαλεῖν καὶ γράµµατα γράψαι ἀµφότερος µόχθος τε κενὸς καὶ πρᾶξις ἄκαρπος → throwing seeds and writing letters at sea are both a vain and fruitless endeavor
English (LSJ)
A deliberate together, Plu.2.96e.
German (Pape)
[Seite 333] von gleichem Willen sein, Plut. de amic. mult. g. E.