Where does “tvättfat” come from?

tvättfat (Swedish) comes from Swedish tvätt, from Old Norse þváttr, from Proto-Germanic þwahtuz, from Proto-Germanic -þuz, from Proto-Indo-European -tus — Derives action nouns from verb roots.

tvättfat (Swedish): basin, washbasin, washbowl

Definitions

basin, washbasin, washbowl

Ancestry of “tvättfat”, step by step

tvättfat traces back through two separate lines of ancestry.

via Swedish tvätt

Step	Language	Word	Meaning
1	Swedish	tvätt	laundry; a wash
2	Old Norse	þváttr	the act of washing, laundry, washing
3	Proto-Germanic	þwahtuz	washing, laundry
4	Proto-Germanic	-þuz	Forms result nouns from verb roots, usually from...
5	Proto-Indo-European	-tus	Derives action nouns from verb roots

via Swedish fät

Step	Language	Word	Meaning
1	Swedish	fät	saucer; a small dish
2	Old Norse	fat	vat, vessel, luggage, clothing; vessel; cover;...
3	Proto-Germanic	fatą	vessel, container
4	Proto-Indo-European	pod-	vessel, container

Every word from Proto-Indo-European -tus →