Simple Definition of extemporaneous

from our Learner's Dictionary

extemporaneous

adjective

ɛkˌstɛmpəˈreɪnijəs

: made up or done without special preparation

—usually used to describe public speaking

He made an extemporaneous speech.

extemporaneous remarks

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“Extemporaneous.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/extemporaneous. Accessed 20 Jun. 2026.

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Simple Definition of extemporaneous

extemporaneous

adjective

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