Where does “zelfverdediging” come from?

zelfverdediging (Dutch) comes from Dutch zelf-, from Middle Dutch self, from Old Dutch self, from Proto-Germanic selbaz, from Proto-Indo-European selbʰ-, from Proto-Indo-European s(w)e-, from Proto-Indo-European swé — self.

zelfverdediging (Dutch): self-defense (US), self-defence (Commonwealth)

Definitions

self-defense (US), self-defence (Commonwealth)

Ancestry of “zelfverdediging”, step by step

Step	Language	Word	Meaning
1	Dutch	zelf-	self-
2	Middle Dutch	self	—
3	Old Dutch	self	—
4	Proto-Germanic	selbaz	self
5	Proto-Indo-European	selbʰ-	one's own
6	Proto-Indo-European	s(w)e-	separate, apart; separate; apart; oneself; one's...
7	Proto-Indo-European	swé	self

Every word from Proto-Indo-European swé →Every word from Proto-Indo-European s(w)e- →Every word from Proto-Indo-European selbʰ- →