Where does “slengja” come from?

slengja (Norwegian Nynorsk) comes from Old Norse slængja, from Old Norse slængva, from Proto-Germanic *slangwijaną.

slengja (Norwegian Nynorsk): throw recklessly

Definitions

Step	Language	Word	Meaning
1	Old Norse	slængja	—
2	Old Norse	slængva	—
3	Proto-Germanic	*slangwijaną	—

slengja — Etymology, Origin & Word History | Etymology Explorer