[ik-stem-puh-rahyz] 
verb, -rized, -riz⋅ing.| 1. | to speak extemporaneously: He can extemporize on any of a number of subjects. |
| 2. | to sing, or play on an instrument, composing the music as one proceeds; improvise. |
| 3. | to do or manage something in a makeshift way. |
| 4. | to make or devise extempore. |
| 5. | Music. to compose offhand; improvise. |
pəˌraɪz