Where does “-u-” come from?

-u- (Swedish) comes from Old Swedish -u, from Old Norse -u.

Ancestry of “-u-”, step by step

Step	Language	Word	Meaning
1	Old Swedish	-u	—
2	Old Norse	-u	—

Words derived from “-u-”

Every word from Old Norse -u →

-u- — Etymology, Origin & Word History | Etymology Explorer