Where does “sötétben” come from?

sötétben (Hungarian) comes from Hungarian sötét, from Proto-Ugric čettɜ- — to become dark.

sötétben (Hungarian): inessive singular of sötét

Definitions

Step	Language	Word	Meaning
1	Hungarian	sötét	dark, sombre , somber; unintelligent, stupid,...
2	Proto-Ugric	čettɜ-	to become dark

sötétben — Etymology, Origin & Word History | Etymology Explorer