Where does “grevis” come from?

grevis (Vulgar Latin) comes from Latin gravis, from Proto-Indo-European gʷréh₂us, from Proto-Indo-European -us — Forms adjectives from Caland system roots.

Ancestry of “grevis”, step by step

StepLanguageWordMeaning
1Latingravisheavy; troublesome, hard; grave, serious
2Proto-Indo-Europeangʷréh₂usheavy
3Proto-Indo-European-usForms adjectives from Caland system roots

Words derived from “grevis

Every word from Proto-Indo-European -usEvery word from Proto-Indo-European gʷréh₂usEvery word from Latin gravis