[{"Bold_text": "noun", "List Items": ["any question or matter involving doubt, uncertainty, or difficulty.Synonyms: enigma , riddle , puzzle Antonyms: certitude", "a question proposed for solution or discussion.Synonyms: enigma , riddle , puzzle", "Mathematics.a statement requiring a solution, usually by means of a mathematical operation or geometric construction."]}, {"Bold_text": "adjective", "List Items": ["difficult to train or guide; unruly:a problem child.", "Literature.dealing with choices of action difficult either for an individual or for society at large:a problem play."]}]