人じん面めん獣じゅう心しんalso: にんめんじゅうしんじんめんじゅうしんMeanings1nounbeast in human form; human face but beastly heartyojijukugo (four-character idiom)›A yojijukugo describing a person who appears human but has a cruel, brutish nature. Literary and somewhat old-fashioned; used in moral criticism.彼かれは人じん面めん獣じゅう心しんの悪