Where does “hyräys” come from?

hyräys (Finnish) comes from Finnish hyrähtää, from Finnish -ähtää, from Proto-Finnic -ahtadak, from Proto-Uralic -ašta-.

Ancestry of “hyräys”, step by step

StepLanguageWordMeaning
1Finnishhyrähtääto start doing something suddenly, burst into
2Finnish-ähtääFront vowel variant of -ahtaa
3Proto-Finnic-ahtadakForms momentane verbs
4Proto-Uralic-ašta-—
Every word from Proto-Uralic -ašta- →Every word from Finnish -ähtää →Every word from Finnish hyrähtää →
hyräys — Etymology, Origin & Word History | Etymology Explorer