[{"Bold_text": "verb (used with object)", "List Items": ["to quell, crush, or end by force:to stifle free expression.to stifle a revolt;to stifle free expression.Synonyms: preclude , prevent , put down put down Antonyms: encourage", "to suppress, curb, or withhold:to stifle a yawn.Synonyms: check Antonyms: encourage", "to kill by impeding respiration; smother .Synonyms: choke , strangle , suffocate"]}, {"Bold_text": "verb (used without object)", "List Items": ["to suffer from difficulty in breathing, as in a close atmosphere.", "to become stifled or suffocated."]}, {"Bold_text": "noun", "List Items": ["(in a horse or other quadruped) the joint between the femur and the tibia, corresponding anatomically to the human knee."]}]