Where does “perfervens” come from?

perfervens (Latin) comes from Latin perferveo, from Latin ferveō, from Proto-Italic ferweō, from Proto-Indo-European bʰrewh₁-, from Proto-Indo-European bʰer- — to bear, carry.

Definitions

Ancestry of “perfervens”, step by step

StepLanguageWordMeaning
1LatinperferveoI am very hot
2Latinferveōto be hot
3Proto-Italicferweō—
4Proto-Indo-Europeanbʰrewh₁-to boil; to brew
5Proto-Indo-Europeanbʰer-to bear, carry
Every word from Proto-Indo-European bʰer- →Every word from Proto-Indo-European bʰrewh₁- →Every word from Proto-Italic ferweō →