Where does “rauður” come from?

rauður (Icelandic) comes from Old Norse rauðr, from Old English dūn, from Proto-Germanic *dūnā, from Proto-Celtic dūnom, from Proto-Indo-European dʰewh₂- — smoke; mist, haze.

rauður (Icelandic): red

Definitions

Ancestry of “rauður”, step by step

Step	Language	Word	Meaning
1	Old Norse	rauðr	red
2	Old English	dūn	hill, down; hill, dune; hill, mountain
3	Proto-Germanic	*dūnā	—
4	Proto-Celtic	dūnom	stronghold, rampart
5	Proto-Indo-European	dʰewh₂-	smoke; mist, haze

Words derived from “rauður”

rauðvín
rauðleitur
mórauður
rauðkál
rauðaldin
rauðgreni
rauðlaukur
rauðmagi
rauðrófa
rauðvik
rauðvingull
rauðíkorni

Every word from Proto-Indo-European dʰewh₂- →Every word from Proto-Celtic dūnom →Every word from Proto-Germanic *dūnā →