Where does “Rivne” come from?

Rivne (English) comes from Ukrainian Рі́вне, from Ukrainian рі́вний, from Proto-Slavic orvьnъ, from Proto-Slavic -ьnъ — -ish, -ic, -al, -ed; From adjectives.

Ancestry of “Rivne”, step by step

Rivne traces back through two separate lines of ancestry.

via Ukrainian Рі́вне

StepLanguageWordMeaning
1UkrainianРі́вне
2Ukrainianрі́внийflat
3Proto-Slavicorvьnъstraight; even
4Proto-Slavic-ьnъ-ish, -ic, -al, -ed; From adjectives

via Old Norse rifna

StepLanguageWordMeaning
1Old Norserifna
Every word from Proto-Slavic -ьnъEvery word from Proto-Slavic orvьnъEvery word from Ukrainian рі́вний