Where does “dyfalorni” come from?

dyfalorni (Welsh) comes from Welsh dyfalu, 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 “dyfalorni”, step by step

StepLanguageWordMeaning
1Welshdyfaluto guess reach an unqualified conclusion
2Welshdy-bad; to, together
3Proto-Celticdus-bad
4Proto-Indo-Europeandus-bad
5Proto-Indo-Europeandēwǝ-to fail, be behind, be lacking
Every word from Proto-Indo-European dēwǝ- →