Where does “käsinpesu” come from?

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

käsinpesu (Finnish): washing by hand

Definitions

  1. washing by hand

Ancestry of “käsinpesu”, step by step

käsinpesu 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 käsin

StepLanguageWordMeaning
1FinnishkäsinInstructive plural form of käsi, translated...
Every word from Proto-Finnic -uEvery word from Finnish -uEvery word from Finnish pesu