Where does “hagyjon” come from?

hagyjon (Hungarian) comes from Hungarian hagy, from Proto-Uralic kaďa- — to leave.

Ancestry of “hagyjon”, step by step

Step	Language	Word	Meaning
1	Hungarian	hagy	to let, to allow; to leave; to leave, to bequeath...
2	Proto-Uralic	kaďa-	to leave