Where does “jalkavaihde” come from?

jalkavaihde (Finnish) comes from Finnish vaihde, from Finnish vaihtaa, from Proto-Finnic vaihtadak, from Proto-Finnic -tadak, from Proto-Uralic -ta- — Forms verbs from nouns; Forms causative verbs...

Ancestry of “jalkavaihde”, step by step

jalkavaihde traces back through two separate lines of ancestry.

via Finnish vaihde

StepLanguageWordMeaning
1Finnishvaihdegear; switch; turn
2Finnishvaihtaato change, replace; to exchange, switch; to swap
3Proto-Finnicvaihtadakto change
4Proto-Finnic-tadakForms verbs from both nominal and verbal stems
5Proto-Uralic-ta-Forms verbs from nouns; Forms causative verbs...

via Finnish jalka

StepLanguageWordMeaning
1Finnishjalkafoot; leg; the lower limb of a human
2Proto-Finnicjalkaleg; foot
3Proto-Finno-Ugricjalka—
Every word from Proto-Uralic -ta- →Every word from Proto-Finnic -tadak →Every word from Proto-Finnic vaihtadak →