Where does “Cacao” come from?

Cacao (Spanish) comes from Classical Nahuatl cacahuatl, from Proto-Nahuan *kakawa-.

Ancestry of “Cacao”, step by step

Step	Language	Word	Meaning
1	Classical Nahuatl	cacahuatl	cacao, cacao bean
2	Proto-Nahuan	*kakawa-	—