Where does “Fēbrua” come from?

Fēbrua (Latin) comes from Latin febris, from Proto-Italic *feɣʷris, from Proto-Indo-European dʰegʷʰris, from Proto-Indo-European dʰegʷʰ- — to burn; warm, hot.

Ancestry of “Fēbrua”, step by step

Step	Language	Word	Meaning
1	Latin	febris	fever
2	Proto-Italic	*feɣʷris	—
3	Proto-Indo-European	dʰegʷʰris	—
4	Proto-Indo-European	dʰegʷʰ-	to burn; warm, hot

Every word from Proto-Indo-European dʰegʷʰ- →

Fēbrua — Etymology, Origin & Word History | Etymology Explorer