Where does “*þiauβʀ” come from?

*þiauβʀ (Old East Norse) comes from Proto-Germanic þeubaz, from Proto-Indo-European tewpó-.

Ancestry of “*þiauβʀ”, step by step

Step	Language	Word	Meaning
1	Proto-Germanic	þeubaz	thief
2	Proto-Indo-European	tewpó-	—

*þiauβʀ — Etymology, Origin & Word History | Etymology Explorer