Where does “stūpōną” come from?

stūpōną (Proto-Germanic) comes from Proto-Indo-European (s)tewb-, from Proto-Indo-European (s)tew- — to push, to hit.

Ancestry of “stūpōną”, step by step

Step	Language	Word	Meaning
1	Proto-Indo-European	(s)tewb-	to push, hit; to push; stick; to push, butt,...
2	Proto-Indo-European	(s)tew-	to push, to hit

stūpōną — Etymology, Origin & Word History | Etymology Explorer