Where does “rat” come from?

rat (Old Frisian) comes from Proto-West Germanic *ratt, from Proto-Germanic rattaz, from Proto-Indo-European Hreh₃d- — to scrape.

Ancestry of “rat”, step by step

StepLanguageWordMeaning
1Proto-West Germanic*ratt—
2Proto-Germanicrattazrat
3Proto-Indo-EuropeanHreh₃d-to scrape

Words derived from “rat”

Every word from Proto-Indo-European Hreh₃d- →Every word from Proto-Germanic rattaz →Every word from Proto-West Germanic *ratt →