Where does “kevytvaahto” come from?

kevytvaahto (Finnish) comes from Finnish vaahto, from Proto-Finnic vakto, from Proto-Germanic þwahtuz, from Proto-Germanic -þuz, from Proto-Indo-European -tus — Derives action nouns from verb roots.

kevytvaahto (Finnish): high expansion foam

Definitions

  1. high expansion foam

Ancestry of “kevytvaahto”, step by step

kevytvaahto traces back through two separate lines of ancestry.

via Finnish vaahto

StepLanguageWordMeaning
1Finnishvaahtofoam; head; mousse
2Proto-Finnicvaktofoam
3Proto-Germanicþwahtuzwashing, laundry
4Proto-Germanic-þuzForms result nouns from verb roots, usually from...
5Proto-Indo-European-tusDerives action nouns from verb roots

via Finnish kevyt

StepLanguageWordMeaning
1Finnishkevytlight, lightweight
2Finnishkeveälightweight
3Proto-Finnickepedälight, of little weight
4Proto-Uralickepälight, of little weight
Every word from Proto-Indo-European -tus →Every word from Proto-Germanic -þuz →Every word from Proto-Germanic þwahtuz →