Where does “agerddlong” come from?

agerddlong (Welsh) comes from Welsh llong, from Welsh llog, from Proto-Brythonic *llong, from Proto-Celtic *longā — boat, vessel.

Ancestry of “agerddlong”, step by step

agerddlong traces back through two separate lines of ancestry.

via Welsh llong

StepLanguageWordMeaning
1Welshllongship, vessel
2Welshlloginterest, profit, benefit; consecrated place,...
3Proto-Brythonic*llong—
4Proto-Celtic*longāboat, vessel

via Welsh agerdd

StepLanguageWordMeaning
1Welshagerdd—
Every word from Proto-Celtic *longā →Every word from Proto-Brythonic *llong →Every word from Welsh llog →