Where does “aatejärjestelmä” come from?

aatejärjestelmä (Finnish) comes from Finnish aate, from Finnish aatella, from Finnish ajatella, from Finnish ajattaa, from Finnish ajaa, from Proto-Finnic ajadak, from Proto-Uralic aja-, from Proto-Indo-Iranian Háȷ́ati — to drive.

Ancestry of “aatejärjestelmä”, step by step

aatejärjestelmä traces back through two separate lines of ancestry.

via Finnish aate

StepLanguageWordMeaning
1Finnishaateideology
2FinnishaatellaAlternative form of ajatella
3Finnishajatellato think (about)
4FinnishajattaaTo have something driven
5Finnishajaato drive, ride, travel in a vehicle, transport in...
6Proto-Finnicajadakto go in a vehicle, to drive
7Proto-Uralicaja-to drive; to hunt, chase
8Proto-Indo-IranianHáȷ́atito drive, lead
9Proto-Indo-Europeanh₂éǵetito be driving
10Proto-Indo-Europeanh₂eǵ-to drive

via Finnish järjestelmä

StepLanguageWordMeaning
1Finnishjärjestelmäsystem
2Finnishjärjestääto arrange; to organize
3Finnishjärkireason; sense
4Proto-Finnicjärkirow; order, condition
Every word from Proto-Indo-European h₂eǵ-