εὐαρμοστία
From LSJ
ἐν οἰκίᾳ τυφλῶν καὶ ὁ νυκτάλωψ ὀξυδερκής → even the day-blind is sharp-eyed in a blind house | among the blind, the one-eyed man is king
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.