Where does “inak” come from?

inak (Slovak) comes from Proto-Slavic jьnako, from Proto-Slavic jьnъ, from Proto-Balto-Slavic *iˀnas, from Proto-Indo-European óynos — one; single.

Ancestry of “inak”, step by step

StepLanguageWordMeaning
1Proto-Slavicjьnakootherwise, differently
2Proto-Slavicjьnъother, another; different
3Proto-Balto-Slavic*iˀnas—
4Proto-Indo-Europeanóynosone; single
Every word from Proto-Indo-European óynos →
inak — Etymology, Origin & Word History | Etymology Explorer