Where does “jynaksiejsy” come from?

jynaksiejsy (Polish) comes from Silesian inkszy, from Old Polish inakszy, from Proto-Slavic inъ, from Proto-Indo-European h₃eynos.

Ancestry of “jynaksiejsy”, step by step

StepLanguageWordMeaning
1Silesianinkszysomeone else; other, different
2Old Polishinakszy—
3Proto-Slavicinъ—
4Proto-Indo-Europeanh₃eynos—
Every word from Proto-Indo-European h₃eynos →Every word from Proto-Slavic inъ →Every word from Old Polish inakszy →