Where does “estufar” come from?

estufar (Portuguese) comes from Italian stufare, from Medieval Latin stupha, from Ancient Greek τῦφος, from Ancient Greek τύφω, from Proto-Indo-European dhubh-, from Proto-Indo-European dheu- — scatter like dust.

estufar (Portuguese): to braise cook in a covered pan

Definitions

to braise cook in a covered pan

Ancestry of “estufar”, step by step

Step	Language	Word	Meaning
1	Italian	stufare	to stew; to bore or weary
2	Medieval Latin	stupha	—
3	Ancient Greek	τῦφος	a kind of fever; delusion, vanity; nonsense
4	Ancient Greek	τύφω	to smoke, fill with smoke; to consume in smoke
5	Proto-Indo-European	dhubh-	—
6	Proto-Indo-European	dheu-	scatter like dust

Every word from Proto-Indo-European dheu- →