σύνδειπνος
From LSJ
Χρὴ τῶν ἀγαθῶν διακναιομένων πενθεῖν ὅστις χρηστὸς ἀπ' ἀρχῆς νενόμισται → When a good man is hurt, all who would be called good must suffer with him
English (LSJ)
ὁ, ἡ,
A companion at table, E.Ion 1172, X.Cyr.3.2.25, 8.2.3, LXX Si.9.16; σ. τινὰ ποιεῖσθαι X.An.2.5.27, Cyr.2.2.28; σ. τῇ γαστρί, οὐ τῇ ψυχῇ Plu.2.660b; Σύνδειπνοι, title of a satyric drama by S., Cic.QF2.16.3, etc.; members of a dining-club, opp. ξένοι, PTeb.118.4,10 (ii B.C.).