Synonyms of extemporaneous

extemporaneous

adjective

(ˌ)ek-ˌstem-pə-ˈrā-nē-əs 

as in impromptu

made or done without previous thought or preparation

caught by surprise, I had to make an extemporaneous speech at the awards banquet

Synonyms & Similar Words

• impromptu
• improvisational
• improvised
• extempore
• extemporary
• unrehearsed
• spur-of-the-moment
• unprepared
• off-the-cuff
• unstudied
• unpremeditated
• offhand
• unplanned
• spontaneous
• unconsidered
• informal
• ad hoc
• unauthorized
• ad-lib
• offhanded
• automatic
• unscripted
• snap
• down and dirty
• impulsive
• instinctive
• cursive
• involuntary
• casual
• ill-advised
• half-baked
• half-cocked

Antonyms & Near Antonyms

• prepared
• rehearsed
• premeditated
• planned
• intentional
• deliberate
• considered
• intended
• premeditative

Example Sentences

Recent Examples of extemporaneous

That might explain why the Portland-via-Fort Lauderdale post-hardcore band performs with such extemporaneous vigor on Deep Sage, thrashing and flailing in a release of anger that trades blind rage for determined revenge. —Madison Bloom, Pitchfork, 4 Dec. 2024

If extemporaneous speaking is challenging, consider an improv class. —Expert Panel®, Forbes, 4 Sep. 2024

Trump spoke for 1 hour and 32 minutes, the longest acceptance speech in modern American history, reportedly about half of it extemporaneous. —Bill Goodykoontz, The Arizona Republic, 18 July 2024

And the president’s capacity to lead the executive branch is, by most accounts, far greater than his capacity to speak in coherent, extemporaneous sentences on CNN. —Vox Staff, Vox, 28 June 2024

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