[{"Bold_text": "adjective", "List Items": ["affected by unhappiness or grief; sorrowful or mournful:to feel sad because a close friend has moved away.Synonyms: melancholy , dejected , depressed , downhearted , downcast , gloomy , discouraged , disconsolate , despondent , unhappy Antonyms: happy", "expressive of or characterized by sorrow:sad looks;a sad song.", "causing sorrow:a sad disappointment;sad news.", "(of color) somber, dark, or dull; drab .", "deplorably bad; sorry :a sad attempt.", "Obsolete.firm or steadfast."]}, {"Bold_text": "noun", "List Items": ["the 14th letter of the Arabic alphabet."]}, {"Bold_text": null, "List Items": ["seasonal affective disorder."]}]