Where does “achwynwyr” come from?

achwynwyr (Welsh) comes from Welsh achwyn, from Welsh cwyn, from Proto-Indo-European gʷey- — to win, to conquer; force.

Ancestry of “achwynwyr”, step by step

StepLanguageWordMeaning
1Welshachwyncomplaint; to complain
2Welshcwyncomplaint; third-person singular present of...
3Proto-Indo-Europeangʷey-to win, to conquer; force
Every word from Proto-Indo-European gʷey-Every word from Welsh cwynEvery word from Welsh achwyn