The definition of extemporaneous is something done or spoken with little or no preparation.
(adjective)An example of extemporaneous is "extemporaneous acting," when an actor practices their lines only once before a performance.
See extemporaneous in Webster's New World College Dictionary
adjective
Origin: LL extemporaneus: see extempore
Related Forms:
See extemporaneous in American Heritage Dictionary 4
adjective
Origin:
Origin: From Late Latin extemporāneus
Origin: , from Latin ex tempore; see extempore
.Related Forms:
Learn more about extemporaneous