Thesaurus

extemporaneous

adjective

Synonyms & Antonyms of extemporaneous

made or done without previous thought or preparation
  • caught by surprise, I had to make an extemporaneous speech at the awards banquet

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The first known use of extemporaneous was in 1673

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“Extemporaneous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/extemporaneous. Accessed 19 Sep. 2020.

More from Merriam-Webster on extemporaneous

Dictionary: Definition of extemporaneous

Nglish: Translation of extemporaneous for Spanish Speakers

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