[{"Bold_text": "noun", "List Items": ["an unnaturally or artificially high-pitched voice or register, especially in a man.", "a person, especially a man, who sings with such a voice."]}, {"Bold_text": "adjective", "List Items": ["of, noting, or having the quality and compass of such a voice."]}, {"Bold_text": "adverb", "List Items": ["in a falsetto."]}]