[{"Bold_text": "adjective", "List Items": ["lacking in consideration for others; inconsiderate; tactless:a thoughtless remark.Synonyms: neglectful , negligent", "characterized by or showing lack of thought : think : thought :a shallow, thoughtless book.", "not thinking enough; careless or heedless:thoughtless of his health.Synonyms: remiss , inattentive", "devoid of or lacking capacity for thought . think . thought ."]}]