Where does “legtitkosabb” come from?

legtitkosabb (Hungarian) comes from Hungarian titkosabb, from Hungarian titkos, from Hungarian titok, from Hungarian -zat, from Hungarian -at, from Hungarian -t, from Proto-Uralic -tt.

Ancestry of “legtitkosabb”, step by step

Step	Language	Word	Meaning
1	Hungarian	titkosabb	—
2	Hungarian	titkos	secret
3	Hungarian	titok	secret
4	Hungarian	-zat	Added to a noun to form an abstract noun or a...
5	Hungarian	-at	Added to a back-vowel verb to form a verb with a...
6	Hungarian	-t	Used to form the accusative case; -ed, -t. Used...
7	Proto-Uralic	-tt	—

Every word from Proto-Uralic -tt →Every word from Hungarian -t →Every word from Hungarian -at →