[{"Bold_text": "adjective", "List Items": ["not substantial ;having no foundation in fact; fanciful; insubstantial:an unsubstantial argument; unsubstantial hopes.", "without material substance:an unsubstantial ghost.", "lacking material substance; materially paltry:an unsubstantial dinner of bread and cheese.", "lacking strength or solidity; flimsy:an unsubstantial wall of cardboard."]}]