mouton enragé UK /ˌmuːtɒn ˌɒnɹæˈʒeɪ/US /ˈmu.tɑ̃ ɑ̃.ɹɹɑˈʒeɪ/ noun1 •A normally peaceful person who has become suddenly and uncharacteristically angry.Remember not to enter the monastery; those monks can be real moutons enragés. formsmoutons enragés