What is the meaning of -ски?

Appended to nouns to create adjectives.

Appended to nouns to create adjectives.

Used to form relational adjectives from nouns: -ish

-ly, -cally, -ishly (adverbial suffix; the adverb form of -ский)

added to nouns to form a relational adjective

adverbial equivalent of -скӣ

Source: wiktionary.org