Antonyms are words with opposite meanings. When it comes to "Giant Cell Aortitis," which is a type of inflammatory disease that affects the walls of the arteries, the antonyms may include "healthy," "normal," "uninflamed," "noninfectious," and "noninflammatory." These are the words that describe a condition where the aortic wall is not inflamed due to the presence of giant cells. While there are no specific antonyms for this medical condition, such words can be used to contrast the diseased state of giant cell aortitis, which can cause fever, fatigue, weight loss, and other symptoms, with normal and healthy conditions.