Where does “bizonyosabb” come from?

bizonyosabb (Hungarian) comes from Hungarian bizonyos, from Hungarian bizony, from Hungarian bízik, from Hungarian -t, from Proto-Uralic -tt.

Ancestry of “bizonyosabb”, step by step

Step	Language	Word	Meaning
1	Hungarian	bizonyos	sure, certain; particular, certain
2	Hungarian	bizony	indeed, certainly, surely; surely, definitely
3	Hungarian	bízik	to trust
4	Hungarian	-t	Used to form the accusative case; -ed, -t. Used...
5	Proto-Uralic	-tt	—