The story
- French · borrowed frommouton enragé
- English todaymouton enragé
First attested in 1826. Borrowed from French mouton enragé, a nickname given to French politician Nicolas de Condorcet by Turgot, from mouton (“sheep”) + enragé, past participle of enrager (“to enrage”).
Etymology from Wiktionary, CC BY-SA 4.0.