Where does “alhaallepäin” come from?

alhaallepäin (Finnish) comes from Finnish päin, from Finnish pää, from Proto-Finnic pää, from Proto-Uralic päŋe — head.

Ancestry of “alhaallepäin”, step by step

alhaallepäin traces back through two separate lines of ancestry.

via Finnish päin

StepLanguageWordMeaning
1Finnishpäinagainst, to, on etc; Used to indicate approximate...
2Finnishpäähead; end, tip
3Proto-Finnicpäähead
4Proto-Uralicpäŋehead

via Finnish alhaalle

StepLanguageWordMeaning
1Finnishalhaalleexpresses movement to a spatially lower position
2Finnishala-under-, sub-, lower, nether; inferior
3Proto-Finnicalalower; under
4Proto-Uralicëlabelow
Every word from Proto-Uralic päŋe →Every word from Proto-Finnic pää →Every word from Finnish pää →