Where does “blizki” come from?

blizki (Lower Sorbian) comes from Proto-Slavic blizъkъ, from Proto-Slavic blizъ, from Proto-Indo-European bʰleyǵ- — to shine.

Ancestry of “blizki”, step by step

StepLanguageWordMeaning
1Proto-Slavicblizъkъnear, close
2Proto-Slavicblizъnear, proximate
3Proto-Indo-Europeanbʰleyǵ-to shine
Every word from Proto-Indo-European bʰleyǵ- →Every word from Proto-Slavic blizъ →Every word from Proto-Slavic blizъkъ →