Where does “vastuskumi” come from?

vastuskumi (Finnish) comes from Finnish vastus, from Finnish vasta-, from Finnish vasta, from Swedish kvast, from Old Swedish quaster, from Old Norse kvǫstr, from Proto-Germanic kwastuz, from Proto-Indo-European gʷes- — twig; leafwork.

Ancestry of “vastuskumi”, step by step

vastuskumi traces back through two separate lines of ancestry.

via Finnish vastus

StepLanguageWordMeaning
1Finnishvastusresistor; resistance; drag
2Finnishvasta-Expressing opposition or contrast: counter-,...
3FinnishvastaExpressing delay or that something takes place...
4Swedishkvastbroom; tassel; cyme
5Old Swedishquaster
6Old Norsekvǫstr
7Proto-Germanickwastuztuft; tassel
8Proto-Indo-Europeangʷes-twig; leafwork

via Finnish kumi

StepLanguageWordMeaning
1Finnishkumirubber; eraser; condom
2GermanGummirubber, gum; rubber band, elastic band; condom,...
3LatincummiAlternative form of cummis
4Ancient Greekκόμμιgum, obtained from babul
5Egyptianqmyanointing oil
Every word from Proto-Indo-European gʷes-