Where does “oczywiśnie” come from?

oczywiśnie (Polish) comes from Polish oczywistny, from Polish oczywisty, from Old Polish oczwisty, from Old Polish oko, from Proto-Slavic ȍko, from Proto-Balto-Slavic ak-, from Proto-Indo-European h₃ókʷs, from Proto-Indo-European h₃ekʷ- — to see; eye.

Ancestry of “oczywiśnie”, step by step

StepLanguageWordMeaning
1Polishoczywistny—
2Polishoczywistyobvious
3Old Polishoczwistyin person
4Old Polishokoeye
5Proto-Slavicȍkoeye
6Proto-Balto-Slavicak-eye
7Proto-Indo-Europeanh₃ókʷseye
8Proto-Indo-Europeanh₃ekʷ-to see; eye
Every word from Proto-Indo-European h₃ekʷ- →Every word from Proto-Indo-European h₃ókʷs →Every word from Proto-Balto-Slavic ak- →