Where does “Bravo” come from?

Bravo (Spanish) comes from Italian bravo, from Vulgar Latin bravus, from Latin barbarus, from Ancient Greek βάρβαρος, from Proto-Indo-European balb-.

Ancestry of “Bravo”, step by step

Step	Language	Word	Meaning
1	Italian	bravo	good, well-behaved; good, skilful, capable,...
2	Vulgar Latin	bravus	—
3	Latin	barbarus	foreign; savage; uncivilized
4	Ancient Greek	βάρβαρος	non-Greek-speaking, foreign; barbaric, brutal,...
5	Proto-Indo-European	balb-	—