Where does “juostenkustu” come from?

juostenkustu (Finnish) comes from Finnish juosta, from Proto-Finnic joostak, from Proto-Uralic jokse-.

Ancestry of “juostenkustu”, step by step

juostenkustu traces back through two separate lines of ancestry.

via Finnish juosta

StepLanguageWordMeaning
1Finnishjuostato run; to flow
2Proto-Finnicjoostakto run, to flow
3Proto-Uralicjokse-—

via Finnish kustu

StepLanguageWordMeaning
1Finnishkustu—
Every word from Proto-Uralic jokse- →Every word from Proto-Finnic joostak →Every word from Finnish juosta →