Where does “fiabhras” come from?
fiabhras (Irish) 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.
fiabhras (Irish): fever
Ancestry of “fiabhras”, step by step