köken: Etymology tree Proto-Indo-European *sth₂-ró-s Proto-Balto-Slavic *stā́ˀras Proto-Slavic *stàrъ Old Polish stary Polish stary Proto-Indo-European *-h₂ Proto-Indo-European *-éh₂ Proto-Balto-Slavic *-āˀ Proto-Slavic *-a Old Polish -a Polish -a Polish stara From stary + -a.