Where does “hapoinen” come from?

hapoinen (Finnish) comes from Finnish öinen, from Finnish yö, from Proto-Finnic öö, from Proto-Finno-Ugric üje.

Ancestry of “hapoinen”, step by step

hapoinen traces back through two separate lines of ancestry.

via Finnish öinen

StepLanguageWordMeaning
1Finnishöinennocturnal
2Finnishyöperiod of day Previous: iltayö Next: aamuyö;...
3Proto-Finnicöönight
4Proto-Finno-Ugricüje—

via Finnish hapan

StepLanguageWordMeaning
1Finnishhapansour, acid in taste; sour, peevish, irritable,...
2Proto-Finnichap'oinsour, acid
3Proto-Finno-Ugricčappa—
Every word from Proto-Finno-Ugric üje →Every word from Proto-Finnic öö →Every word from Finnish yö →