Where does “ománský” come from?

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

Ancestry of “ománský”, step by step

StepLanguageWordMeaning
1Czech-ský-ian, -ic
2Old Czech-skýian, -ic from, related to, or like
3Proto-Slavic-ьskъ-ic, -ish
4Proto-Indo-European-iskosCharacteristic of, typical of, pertaining to
Every word from Proto-Indo-European -iskos →Every word from Czech -ský →Every word from Proto-Slavic -ьskъ →