[{"Bold_text": "noun", "List Items": ["a spoollike toy consisting of two thick wooden, plastic, or metal disks connected by a dowel pin in the center to which a string is attached, one end being looped around the player's finger so that the toy can be spun out and reeled in by wrist motion.", "something that fluctuates or moves up and down, especially suddenly or repeatedly.", "Slang.a stupid, foolish, or incompetent person."]}, {"Bold_text": "adjective", "List Items": ["Informal.moving up and down or back and forth; fluctuating; vacillating:yo-yo prices; a yo-yo foreign policy."]}, {"Bold_text": "verb (used without object)", "List Items": ["Informal.to move up and down or back and forth; fluctuate or vacillate:Mortgage rates are still yo-yoing."]}, {"Bold_text": "verb (used with object)", "List Items": ["Informal.to cause to yo-yo."]}]