δειπνητικῶς
From LSJ
καλῶς δρῶν ἐξαμαρτεῖν μᾶλλον ἢ νικᾶν κακῶς → I would prefer to fail with honor than to win by evil | I prefer to fail by acting rightly rather than win by acting wrongly | Better fail by doing right, than win by doing wrong (Sophocles, Philoctetes 95)
Russian (Dvoretsky)
δειπνητικῶς: как полагается для обеда (μαγειρικῶς καὶ δ. διακονεῖσθαι Arph.).