Where does “nykäys” come from?

nykäys (Finnish) comes from Finnish nykähtää, from Finnish -ähtää, from Proto-Finnic -ahtadak, from Proto-Uralic -ašta-.

nykäys (Finnish): tug, twitch; jerk, jolt

Definitions

Step	Language	Word	Meaning
1	Finnish	nykähtää	—
2	Finnish	-ähtää	Front vowel variant of -ahtaa
3	Proto-Finnic	-ahtadak	—
4	Proto-Uralic	-ašta-	—

nykäys — Etymology, Origin & Word History | Etymology Explorer