ferveo

(conjugation-2, impersonal) to be hot
(conjugation-2, impersonal) to burn
(conjugation-2, impersonal) to boil; seethe, foam
(conjugation-2, figuratively, impersonal) to come or swarm forth in great numbers, be alive with, teem, abound
(conjugation-2, figuratively, impersonal) to be inflamed, agitated or fired up

Pronounced as (IPA)

[ˈfɛr.we.oː]

From Proto-Italic *ferweō, from earlier *ferwejō, from Proto-Indo-European *bʰrewh₁- (“to be hot, boil”). Cognate with Ancient Greek φρέαρ (phréar), Old Armenian բորբ (borb), Welsh berw (“to boil”), English burn, brew, per De Vaan citing Schrijver.