Where does “rukouspesu” come from?

rukouspesu (Finnish) comes from Finnish pesu, from Finnish -u, from Proto-Finnic -u — Forms nouns from adjectives, nouns.

rukouspesu (Finnish): abdest

Definitions

  1. abdest

Ancestry of “rukouspesu”, step by step

rukouspesu traces back through two separate lines of ancestry.

via Finnish pesu

StepLanguageWordMeaning
1Finnishpesuwash, washing
2Finnish-uForms nouns from verbs. Most common with "e"- and...
3Proto-Finnic-uForms nouns from adjectives, nouns

via Finnish rukous

StepLanguageWordMeaning
1Finnishrukousprayer; rogation
2Finnish-usForms nouns from verbs, describing an action or...
3Proto-Finnic-usForms some nouns from nominal stems
Every word from Proto-Finnic -uEvery word from Finnish -uEvery word from Finnish pesu