Where does “olddodi” come from?

olddodi (Welsh) comes from Welsh dodi, from Welsh dy-, from Proto-Celtic dus-, from Proto-Indo-European dus-, from Proto-Indo-European dēwǝ- — to fail, be behind, be lacking.

Ancestry of “olddodi”, step by step

olddodi traces back through two separate lines of ancestry.

via Welsh dodi

StepLanguageWordMeaning
1Welshdodito put, to place
2Welshdy-bad; to, together
3Proto-Celticdus-bad
4Proto-Indo-Europeandus-bad
5Proto-Indo-Europeandēwǝ-to fail, be behind, be lacking

via Welsh ôl

StepLanguageWordMeaning
1Welshôltrack, trace; mark, residue; back, rear
Every word from Proto-Indo-European dēwǝ-