Where does “legszabadabban” come from?

legszabadabban (Hungarian) comes from Hungarian -an, from Hungarian -á, from Proto-Uralic -i.

Ancestry of “legszabadabban”, step by step

Step	Language	Word	Meaning
1	Hungarian	-an	Added to an adjective to create an adverb; Added...
2	Hungarian	-á	Used to form the third-person singular indicative...
3	Proto-Uralic	-i	—