Where does “grade” come from?

grade (Old Portuguese) comes from Latin cratis, from Proto-Indo-European kr̥tis, from Proto-Indo-European kʷr̥-tí-s, from Proto-Indo-European kʷer- — to do; to make; to build.

Ancestry of “grade”, step by step

StepLanguageWordMeaning
1Latincratiswickerwork; bundle of brush; fascine
2Proto-Indo-Europeankr̥tis—
3Proto-Indo-Europeankʷr̥-tí-s—
4Proto-Indo-Europeankʷer-to do; to make; to build

Words derived from “grade”

Every word from Proto-Indo-European kʷer- →Every word from Proto-Indo-European kʷr̥-tí-s →Every word from Proto-Indo-European kr̥tis →