[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. |
| ex·tem·po·rize (ĭk-stěm'pə-rīz') v. ex·tem·po·rized, ex·tem·po·riz·ing, ex·tem·po·riz·es v. tr. To do or perform (something) without prior preparation or practice: extemporized an acceptance speech. v. intr. To perform an act or utter something in an impromptu manner; improvise: "bravely demonstrating his ability to extemporize intelligently" (William Safire). [From extempore.] ex·tem'po·ri·za'tion (-pər-ĭ-zā'shən) n., ex·tem'po·riz'er n. |
pəˌraɪz