Where does “старик” come from?

старик (Bulgarian) comes from Bulgarian стар, from Proto-Slavic starъ, from Proto-Balto-Slavic staʔros, from Proto-Indo-European steh₂-ro-, from Proto-Indo-European steh₂- — to stand.

Ancestry of “старик”, step by step

StepLanguageWordMeaning
1Bulgarianстарold; out of date, obsolete, outdated,...
2Proto-Slavicstarъold
3Proto-Balto-Slavicstaʔros—
4Proto-Indo-Europeansteh₂-ro-large, big, thick; old
5Proto-Indo-Europeansteh₂-to stand
Every word from Proto-Indo-European steh₂- →Every word from Proto-Indo-European steh₂-ro- →Every word from Proto-Balto-Slavic staʔros →