Where does “tapaninajo” come from?

tapaninajo (Finnish) comes from Finnish ajo, from Finnish ajaa, from Proto-Finnic ajadak, from Proto-Uralic aja-, from Proto-Indo-Iranian Háȷ́ati, from Proto-Indo-European h₂éǵeti, from Proto-Indo-European h₂eǵ- — to drive.

Ancestry of “tapaninajo”, step by step

tapaninajo traces back through two separate lines of ancestry.

via Finnish ajo

StepLanguageWordMeaning
1Finnishajodriving; riding; chase
2Finnishajaato drive, ride, travel in a vehicle, transport in...
3Proto-Finnicajadakto go in a vehicle, to drive
4Proto-Uralicaja-to drive; to hunt, chase
5Proto-Indo-IranianHáȷ́atito drive, lead
6Proto-Indo-Europeanh₂éǵetito be driving
7Proto-Indo-Europeanh₂eǵ-to drive

via Finnish Tapani

StepLanguageWordMeaning
1FinnishTapaniBoxing Day
2LatinStephanus
3Ancient GreekΣτέφανοςIn particular: Stephen, an early Christian martyr
4Ancient GreekστέφωI put around; I encircle, crown, wreath, garland
5Proto-Hellenicstékʷʰōto enlace, crown, encircle
6Proto-Indo-Europeanstegʷʰ-to enlace
Every word from Proto-Indo-European h₂eǵ-Every word from Proto-Indo-European h₂éǵetiEvery word from Proto-Indo-Iranian Háȷ́ati