[{"Bold_text": "adjective", "List Items": ["full of, characterized by, or involving mystery :a mysterious occurrence.Synonyms: cryptic , occult , esoteric , secret", "implying or suggesting a mystery :a mysterious smile.", "of obscure nature, meaning, origin, etc.; puzzling; inexplicable:a mysterious inscription on the ancient tomb.Synonyms: impenetrable , enigmatic , incomprehensible , unintelligible , unfathomable"]}]