[{"Bold_text": "verb (used with object)", "List Items": ["to elevate in character; sublimate.", "to make (the mind, senses, etc.) keen or discerning; sharpen.", "to introduce subtleties into or argue subtly about.", "to make thin, rare, or more fluid or volatile; refine."]}, {"Bold_text": "verb (used without object)", "List Items": ["to make subtle distinctions or to argue subtly."]}]