Where does “cornut” come from?

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

Ancestry of “cornut”, step by step

StepLanguageWordMeaning
1LatinCornutushorned, having horns
2Latincornūhorn; antler
3Proto-Indo-Europeanḱerh₂-head, top; horn

Words derived from “cornut”

Every word from Proto-Indo-European ḱerh₂- →Every word from Latin cornū →Every word from Latin Cornutus →