Where does “riutuminen” come from?

riutuminen (Finnish) comes from Finnish riutua, from Old Norse þrjóta, from Proto-Germanic uzþreutaną, from Proto-Germanic uz-, from Proto-Indo-European uss-, from Proto-Indo-European uds-, from Proto-Indo-European úd — out, outward.

Ancestry of “riutuminen”, step by step

StepLanguageWordMeaning
1Finnishriutuato languish to lose strength and become weak
2Old Norseþrjótato fail, come to an end, run out; to fail; to run...
3Proto-Germanicuzþreutanąto tire, annoy; to displease
4Proto-Germanicuz-up, out
5Proto-Indo-Europeanuss-
6Proto-Indo-Europeanuds-up, out
7Proto-Indo-Europeanúdout, outward
Every word from Proto-Indo-European údEvery word from Proto-Indo-European uds-Every word from Proto-Indo-European uss-
riutuminen — Etymology, Origin & Word History | Etymology Explorer