Where does “legátlagosabb” come from?

legátlagosabb (Hungarian) comes from Hungarian átlagosabb, from Hungarian átlagos, from Hungarian átlag, from Hungarian -lag, from Hungarian -l, from Proto-Uralic -l.

Ancestry of “legátlagosabb”, step by step

Step	Language	Word	Meaning
1	Hungarian	átlagosabb	—
2	Hungarian	átlagos	average
3	Hungarian	átlag	average
4	Hungarian	-lag	-ly. Added to a word to form an adverb. Today it...
5	Hungarian	-l	Appended to a noun, an adjective or less...
6	Proto-Uralic	-l	—

Every word from Proto-Uralic -l →Every word from Hungarian -l →Every word from Hungarian -lag →