Where does “nedobytný” come from?

nedobytný (Czech) comes from Czech dobýt, from Czech být, from Old Czech býti, from Proto-Slavic *byti, from Proto-Balto-Slavic bū́ˀtei, from Proto-Indo-European bʰuH- — to become, grow, appear.

nedobytný (Czech): impregnable, impenetrable, unassailable

Definitions

  1. impregnable, impenetrable, unassailable

Ancestry of “nedobytný”, step by step

StepLanguageWordMeaning
1Czechdobýtto conquer
2Czechbýtto be; Jel jsem do Prahy. ― I went to Prague;...
3Old Czechbýtito be
4Proto-Slavic*byti—
5Proto-Balto-Slavicbū́ˀteito be
6Proto-Indo-EuropeanbʰuH-to become, grow, appear
Every word from Proto-Indo-European bʰuH- →Every word from Proto-Balto-Slavic bū́ˀtei →Every word from Proto-Slavic *byti →