Where does “-ský” come from?

-ský (Slovak) comes from Proto-Slavic -ьskъ, from Proto-Indo-European -iskos — Characteristic of, typical of, pertaining to.

-ský (Slovak): -ian

Definitions

Step	Language	Word	Meaning
1	Proto-Slavic	-ьskъ	-ic, -ish
2	Proto-Indo-European	-iskos	Characteristic of, typical of, pertaining to

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