Where does “fakkiutuminen” come from?

fakkiutuminen (Finnish) comes from Finnish fakkiutua, from German fach, from Middle High German vach, from Old High German fah, from Proto-Germanic *fak, from Proto-Germanic faką, from Proto-Indo-European peh₂ǵ- — to attach.

Ancestry of “fakkiutuminen”, step by step

StepLanguageWordMeaning
1FinnishfakkiutuaTo overspecialize
2Germanfachsecond-person singular imperative of fachen
3Middle High Germanvach-fold
4Old High Germanfahwall
5Proto-Germanic*fak—
6Proto-GermanicfakąAn enclosed or defined space; division;...
7Proto-Indo-Europeanpeh₂ǵ-to attach
Every word from Proto-Indo-European peh₂ǵ- →Every word from Proto-Germanic faką →Every word from Proto-Germanic *fak →