extemporize
1. [ verb ] manage in a makeshift way; do with whatever is at hand
Synonyms: improvise
Examples:

"after the hurricane destroyed our house, we had to improvise for weeks"

Related terms: cope improvisation
2. [ verb ] (music) perform without preparation
Synonyms: improvise improvize extemporise ad-lib
Examples:

"he extemporized a speech at the wedding"

Related terms: perform extemporization improvisation improvisation
Similar spelling:   extemporise
  extempore
  ex_tempore
  extemporarily
  extemporaneous
  extemporary
  extensor