ἐν σκότῳ

From LSJ

χρώμεθα γὰρ πολιτείᾳ οὐ ζηλούσῃ τοὺς τῶν πέλας νόμους → we live under a form of government which does not emulate the institutions of our neighbours

Source

Dutch (Woordenboekgrieks.nl)

in duisternis, in het geheim