εὐαρμοστία
From LSJ
πρῶτον μὲν οὖν ὄστρεια παρὰ Νηρεῖ τινι ἰδὼν γέροντι φυκί ἠμφιεσμένα ἔλαβον ἐχίνους τ' ἐστὶ γὰρ προοίμιον δείπνου χαριέντως ταῦτα πεπρυτανευμένου → So first I spotted oysters wrapped in seaweed at the shop of some old Nereus, and sea urchins, which I bought; these were the appetizers for a delightfully managed dinner
English (LSJ)
ἡ,
A happy adaptation, suitableness, μὴ μόνοις τοῖς λεγομένοις, ἀλλὰ καὶ ταῖς τούτων εὐ. συμπείθειν Isoc.15.189; εὐ. ψυχῆς πρὸς τὰς ἡδονάς Pl.Def.411e, cf. Ph.2.79, etc. II of men's dispositions and tempers (with metaphor from music), Pl.R.400d, Prt. 326b, etc.; εὐ. τρόπων D.61.19; εὐ. πρὸς ἔντευξιν Pl.Pomp.1; of political concord, κοινὸν ἀγαθὸν εὐ. τις Ecphant. ap. Stob.4.7.64.