Where does “rash” come from?

rash (Middle English) comes from Old English ræsc, from Proto-Germanic raskuz, from Proto-Germanic raþskuz, from Proto-Indo-European rotskwos, from Proto-Indo-European ret- — to run, to roll; to run, roll.

Ancestry of “rash”, step by step

StepLanguageWordMeaning
1Old Englishræsca heavy shower
2Proto-Germanicraskuzrapid, snell
3Proto-Germanicraþskuzrash, rapid
4Proto-Indo-Europeanrotskwosrapid
5Proto-Indo-Europeanret-to run, to roll; to run, roll

Words derived from “rash”

Every word from Proto-Indo-European ret- →Every word from Proto-Indo-European rotskwos →Every word from Proto-Germanic raþskuz →