κοινωνητέον
From LSJ
τίς ἥδε κραυγὴ καὶ δόμων περίστασις; → what means this uproar and thronging about the house, what means the crowd standing round the house?
English (LSJ)
A one must share in, τινός τινι Pl.R.403b; φιλίας Ph.2.401; ὀνειδῶν Plu.Pomp.44.
Greek (Liddell-Scott)
κοινωνητέον: ῥημ. ἐπίθ., δεῖ κοινωνεῖν, τινός τινι Πλάτ. Πολ. 403Β.