verb, -ized, -iz⋅ing.| 1. | to elevate in character; sublimate. |
| 2. | to make (the mind, senses, etc.) keen or discerning; sharpen. |
| 3. | to introduce subtleties into or argue subtly about. |
| 4. | to make thin, rare, or more fluid or volatile; refine. |
| 5. | to make subtle distinctions or to argue subtly. |
| subtilise | |
verb | |
| make (senses) more keen [syn: subtilize] |