Where does “mélyén” come from?

mélyén (Hungarian) comes from Hungarian -e, from Hungarian e, from Proto-Uralic e- — this; not; the negative verb.

mélyén (Hungarian): superessive singular of mélye

Definitions

Step	Language	Word	Meaning
1	Hungarian	-e	his, her, its, -'s, of; -s', of…-s; ago
2	Hungarian	e	this; look!, hey!
3	Proto-Uralic	e-	this; not; the negative verb

mélyén — Etymology, Origin & Word History | Etymology Explorer