Where does “-red” come from?

-red (Welsh) comes from Proto-Celtic *-retom, from Proto-Indo-European Hret- — to roll; wheel; to run, roll.

Ancestry of “-red”, step by step

StepLanguageWordMeaning
1Proto-Celtic*-retomrun
2Proto-Indo-EuropeanHret-to roll; wheel; to run, roll

Words derived from “-red

Every word from Proto-Indo-European Hret-Every word from Proto-Celtic *-retom