Where does “five” come from?
five (Walloon) comes from Old French fievre, from Latin febris, from Proto-Italic *feɣʷris, from Proto-Indo-European dʰegʷʰris, from Proto-Indo-European dʰegʷʰ- — to burn; warm, hot.
five (Walloon): fever; delirium
Ancestry of “five”, step by step