[{"Bold_text": "noun", "List Items": ["a person who sells quack medicines, as from a platform in public places, attracting and influencing an audience by tricks, storytelling, etc.Synonyms: pitchman", "any charlatan or quack.Synonyms: fraud , pretender , phony"]}, {"Bold_text": "verb (used without object)", "List Items": ["to act or operate as a mountebank."]}]