köken: Etymology tree Proto-Indo-European *ís? Proto-Indo-European *h₁óynos Proto-Balto-Slavic *iˀnas Proto-Slavic *jьnъ Proto-Slavic *-ako Proto-Slavic *jьnako Old Polish inako Proto-Indo-European *-yōs Proto-Slavic *-je Old Polish -ej Old Polish inaczej Polish inaczej Inherited from Old Polish inaczej. Compare Kashubian jinaczi.