extemporise

Verb

 * 1)  To do something, particularly to perform or speak, without prior planning or thought; to act in an impromptu manner; to improvise.
 * 2)  To do something in a makeshift way.
 * 3)  To make or create ex tempore.
 * 4)  To compose extemporaneously or improvise.

Related terms

 * / extemporization
 * / extemporization
 * / extemporization