Where does “ruvettuma” come from?

ruvettuma (Finnish) comes from Finnish ruvettua, from Finnish rupi, from Proto-Finnic rupi, from Proto-Germanic hreubaz, from Proto-Indo-European kreup- — scab, crust.

Ancestry of “ruvettuma”, step by step

StepLanguageWordMeaning
1Finnishruvettua—
2Finnishrupiscab; eschar
3Proto-Finnicrupiscab
4Proto-Germanichreubazrough, crusty, scabby
5Proto-Indo-Europeankreup-scab, crust
Every word from Proto-Indo-European kreup- →Every word from Proto-Germanic hreubaz →Every word from Proto-Finnic rupi →