Where does “ryðfrítt” come from?

ryðfrítt (Icelandic) comes from Icelandic ryðfrír, from Icelandic ryð, from Old Norse rustr, from Proto-Germanic rustaz, from Proto-Indo-European rudʰso-, from Proto-Indo-European h₁rewdʰ- — red.

Ancestry of “ryðfrítt”, step by step

StepLanguageWordMeaning
1Icelandicryðfrírstainless, rust-free
2Icelandicryðrust
3Old Norserustr—
4Proto-Germanicrustazrust
5Proto-Indo-Europeanrudʰso-red
6Proto-Indo-Europeanh₁rewdʰ-red

Words derived from “ryðfrítt”

Every word from Proto-Indo-European h₁rewdʰ- →Every word from Proto-Indo-European rudʰso- →Every word from Proto-Germanic rustaz →