Where does “tirskaus” come from?

tirskaus (Finnish) comes from Finnish tirskahtaa, from Finnish -ähtää, from Proto-Finnic -ahtadak, from Proto-Uralic -ašta-.

Ancestry of “tirskaus”, step by step

StepLanguageWordMeaning
1Finnishtirskahtaato drip, to dribble of small amounts of liquid
2Finnish-ähtääFront vowel variant of -ahtaa
3Proto-Finnic-ahtadakForms momentane verbs
4Proto-Uralic-ašta-
Every word from Proto-Uralic -ašta-Every word from Finnish -ähtääEvery word from Finnish tirskahtaa