Where does “fervilhar” come from?

fervilhar (Portuguese) comes from Portuguese ferver, from Old Portuguese ferver, from Latin ferveō, from Proto-Italic ferweō, from Proto-Indo-European bʰrewh₁-, from Proto-Indo-European bʰer- — to bear, carry.

fervilhar (Portuguese): to be swarming or teeming with something

Definitions

to be swarming or teeming with something

Ancestry of “fervilhar”, step by step

Step	Language	Word	Meaning
1	Portuguese	ferver	to boil (heat a liquid until it begins to turn into a gas)
2	Old Portuguese	ferver	—
3	Latin	ferveō	to be hot
4	Proto-Italic	ferweō	—
5	Proto-Indo-European	bʰrewh₁-	to boil; to brew
6	Proto-Indo-European	bʰer-	to bear, carry

Every word from Proto-Indo-European bʰer- →Every word from Proto-Indo-European bʰrewh₁- →Every word from Proto-Italic ferweō →