Where does “Ратушна” come from?

Ратушна (Ukrainian) comes from Ukrainian -на, from Proto-Slavic -ьnъ — -ish, -ic, -al, -ed; From adjectives.

Ancestry of “Ратушна”, step by step

StepLanguageWordMeaning
1Ukrainian-на(or) A feminine patronymic suffix added to a given name: daughter or wife of
2Proto-Slavic-ьnъ-ish, -ic, -al, -ed; From adjectives
Every word from Proto-Slavic -ьnъ →Every word from Ukrainian -на →