Where does “cornuto” come from?

cornuto (English) comes from Italian cornuto, from Latin Cornutus, from Latin cornū, from Proto-Indo-European ḱerh₂- — head, top; horn.

cornuto (English): A cuckold

Definitions

Step	Language	Word	Meaning
1	Italian	cornuto	horned; cuckold
2	Latin	Cornutus	—
3	Latin	cornū	—
4	Proto-Indo-European	ḱerh₂-	head, top; horn

cornuto — Etymology, Origin & Word History | Etymology Explorer