Where does “Sporny” come from?

Sporny (English) comes from Polish Sporny, from Proto-Slavic *sъporьnъ — arguable, disputable.

Ancestry of “Sporny”, step by step

StepLanguageWordMeaning
1PolishSpornycontentious
2Proto-Slavic*sъporьnъarguable, disputable
Every word from Proto-Slavic *sъporьnъ →Every word from Polish Sporny →
Sporny — Etymology, Origin & Word History | Etymology Explorer