extemporise
Pronunciation:
/əkˈstɛmpəɹaɪz//əkˈstɛmpəɹaɪz/verb
Definitions
To do something, particularly to perform or speak, without prior planning or thought; to act in an impromptu manner; to improvise.
To do something in a makeshift way.
To make or create extempore.
To compose extemporaneously or improvise.