Where does “jól” come from?

jól (Hungarian) comes from Hungarian jó, from Proto-Ugric jomɜ.

jól (Hungarian): well, fine

Definitions

Step	Language	Word	Meaning
1	Hungarian	jó	good; quite , fair , considerable, significant,...
2	Proto-Ugric	jomɜ	—

jól — Etymology, Origin & Word History | Etymology Explorer