Where does “alhaaltapäin” come from?

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

Ancestry of “alhaaltapäin”, step by step

alhaaltapäin 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 alhaalta

StepLanguageWordMeaning
1Finnishalhaaltafrom below
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 →