Where does “cornut” come from?

cornut (Catalan) comes from Latin Cornutus, from Latin cornū, from Proto-Indo-European ḱerh₂- — head, top; horn.

cornut (Catalan): horned

Definitions

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

cornut — Etymology, Origin & Word History | Etymology Explorer