Where does “prem” come from?

prem (Old Welsh) comes from Proto-Brythonic prɨβ̃, from Proto-Celtic kʷrimis, from Proto-Indo-European kʷŕ̥mis — worm.

Ancestry of “prem”, step by step

StepLanguageWordMeaning
1Proto-Brythonicprɨβ̃worm
2Proto-Celtickʷrimisworm
3Proto-Indo-Europeankʷŕ̥misworm

Words derived from “prem”

Every word from Proto-Indo-European kʷŕ̥mis →Every word from Proto-Celtic kʷrimis →Every word from Proto-Brythonic prɨβ̃ →
prem — Etymology, Origin & Word History | Etymology Explorer