Where does “aisakeinu” come from?

aisakeinu (Finnish) comes from Finnish aisa, from Proto-Finnic aisa, from Proto-Indo-European h₂oyHsos.

Ancestry of “aisakeinu”, step by step

aisakeinu traces back through two separate lines of ancestry.

via Finnish aisa

StepLanguageWordMeaning
1Finnishaisashaft; pole; penis
2Proto-Finnicaisashaft, thill
3Proto-Indo-Europeanh₂oyHsos—

via Finnish keinu

StepLanguageWordMeaning
1FinnishkeinuA swing
2Finnish-uForms nouns from verbs. Most common with "e"- and...
3Proto-Finnic-uForms nouns from adjectives, nouns
Every word from Proto-Indo-European h₂oyHsos →Every word from Proto-Finnic aisa →Every word from Finnish aisa →
aisakeinu — Etymology, Origin & Word History | Etymology Explorer