verb (used without object), ex·tem·po·rized, ex·tem·po·riz·ing.
verb (used with object), ex·tem·po·rized, ex·tem·po·riz·ing.
Examples from the Web for extemporize
I was in the vein to extemporize successfully, and felt that I did so.
They could extemporize board and men, but how to raise the bits of ivory?Bits of Blarney|R. Shelton Mackenzie
Being a victim of the unforeseen, no choice remains to me; I must extemporize.'Neath Verdun, August-October, 1914|Maurice Genevoix
When I appeared to extemporize, I was again enthusiastically received.
I used to learn the songs by heart and invent and extemporize tunes for them.My Boyhood|John Burroughs