Where does “nytkäys” come from?

nytkäys (Finnish) comes from Finnish nytkähtää, from Finnish nytkiä, from Finnish -ia, from Proto-Finnic -idak, from Proto-Uralic -j-.

Ancestry of “nytkäys”, step by step

StepLanguageWordMeaning
1Finnishnytkähtääto twitch or jerk
2FinnishnytkiäTo jerk repeatedly
3Finnish-iaForms primarily transitive verbs describing...
4Proto-Finnic-idakapplicative suffix
5Proto-Uralic-j-—
Every word from Proto-Uralic -j- →Every word from Finnish -ia →Every word from Proto-Finnic -idak →
nytkäys — Etymology, Origin & Word History | Etymology Explorer