Where does “roa-opt” come from?

roa-opt (Old Portuguese) comes from Proto-Celtic kumbā, from Proto-Indo-European kumbʰo-, from Proto-Indo-European keu- — bend; vault, hole; to shine; light; bright.

Ancestry of “roa-opt”, step by step

roa-opt traces back through two separate lines of ancestry.

via Proto-Celtic kumbā

StepLanguageWordMeaning
1Proto-Celtickumbāvalley
2Proto-Indo-Europeankumbʰo-—
3Proto-Indo-Europeankeu-bend; vault, hole; to shine; light; bright

via Latin Cossus

StepLanguageWordMeaning
1LatinCossuswoodworm worm or grub found in wood
2Proto-Indo-Europeanḱes-to cut off, separate; to cut up, to slaughter; to...

Words derived from “roa-opt”

Every word from Proto-Indo-European keu- →Every word from Proto-Indo-European kumbʰo- →Every word from Proto-Celtic kumbā →