Where does “февроуари” come from?
февроуари (Old Church Slavonic) comes from Koine Greek Φεβρουάριος, from Latin Februārius, from Latin Fēbrua, from Latin febris, from Proto-Italic *feɣʷris, from Proto-Indo-European dʰegʷʰris, from Proto-Indo-European dʰegʷʰ- — to burn; warm, hot.
Ancestry of “февроуари”, step by step