[{"Bold_text": "adjective", "List Items": ["coming or occurring far apart in time; unusual ; uncommon :His visits are rare occasions.a rare disease;His visits are rare occasions.Synonyms: singular , extraordinary , exceptional Antonyms: common", "thinly distributed over an area; few and widely separated:Lighthouses are rare on that part of the coast.Synonyms: infrequent , sparse Antonyms: frequent", "having the component parts not closely compacted together; not dense:lightheaded from the rare mountain air.rare gases;lightheaded from the rare mountain air.", "unusually great:a rare display of courage.", "unusually excellent; admirable ; fine :She showed rare tact in inviting them.Synonyms: inimitable , incomparable , choice Antonyms: inferior"]}, {"Bold_text": "adjective", "List Items": ["(of meat) cooked just slightly:He likes his steak rare."]}, {"Bold_text": "verb (used without object)", "List Items": ["rear2(def6) rear2(def6)."]}]