Where does “zestraśnić” come from?

zestraśnić (Polish) comes from Polish straśnić, from Polish straszny, from Proto-Slavic strašьnъ, from Proto-Slavic straxъ, from Proto-Balto-Slavic strākš-, from Proto-Indo-European (s)treg- — rigid, stiff; to be stiff, rigid, strong.

Ancestry of “zestraśnić”, step by step

StepLanguageWordMeaning
1Polishstraśnić—
2Polishstrasznyscary, frightening; horrid, horrible, terrible,...
3Proto-Slavicstrašьnъterrible
4Proto-Slavicstraxъfear, terror
5Proto-Balto-Slavicstrākš-—
6Proto-Indo-European(s)treg-rigid, stiff; to be stiff, rigid, strong
Every word from Proto-Indo-European (s)treg- →Every word from Proto-Balto-Slavic strākš- →Every word from Proto-Slavic straxъ →