Where does “sjálfstraust” come from?

sjálfstraust (Icelandic) comes from Icelandic sjálfur, from Old Norse sjálfr, from Proto-Germanic selbaz, from Proto-Indo-European selbʰ-, from Proto-Indo-European s(w)e-, from Proto-Indo-European swé — self.

sjálfstraust (Icelandic): self-confidence

Definitions

self-confidence

Ancestry of “sjálfstraust”, step by step

sjálfstraust traces back through two separate lines of ancestry.

via Icelandic sjálfur

Step	Language	Word	Meaning
1	Icelandic	sjálfur	self
2	Old Norse	sjálfr	self
3	Proto-Germanic	selbaz	self
4	Proto-Indo-European	selbʰ-	one's own
5	Proto-Indo-European	s(w)e-	separate, apart; separate; apart; oneself; one's...
6	Proto-Indo-European	swé	self

via Icelandic traust

Step	Language	Word	Meaning
1	Icelandic	traust	trust, faith; confidence, trust
2	Old Norse	traust	confidence, help, protection; trust; benefit,...
3	Proto-Germanic	traustą	shelter; help; aid; trust; confidence; alliance
4	Proto-Indo-European	dreu-	tree; firm, solid, steadfast

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