Where does “-hatatlan” come from?

-hatatlan (Hungarian) comes from Hungarian -hat, from Hungarian hát, from Proto-Uralic kutte — ridge; six.

-hatatlan (Hungarian): un- ... -able, ir- ... -able. A compound suffix...

Definitions

Step	Language	Word	Meaning
1	Hungarian	-hat	can, could, may, might, be allowed to. Added to...
2	Hungarian	hát	back; well; then, and, but
3	Proto-Uralic	kutte	ridge; six

-hatatlan — Etymology, Origin & Word History | Etymology Explorer