IMPROMPTU Synonyms: 89 Similar and Opposite Words

impromptu 1 of 3

adjective

im-ˈpräm(p)-(ˌ)tü

Definition of impromptu

as in improvised

made or done without previous thought or preparation our dinner guest thanked us with an impromptu song

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Antonyms & Near Antonyms

impromptu

2 of 3

noun

as in improvisation

something that is performed, made, or done without preparation although five different lines had been written, the best choice turned out to be an impromptu from the tired actor himself

Synonyms & Similar Words

Antonyms & Near Antonyms

impromptu

3 of 3

adverb

as in spontaneously

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Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of impromptu

Adjective

Yet her inclusion feels totally impromptu, like she and Bryan just got called up for their turn at karaoke and didn’t have a chance to work out the harmonies. — Walden Green, Pitchfork, 16 Oct. 2026 Moroney, Bryan and 19-year-old singer-songwriter Ty Myers were teased as being part of the lineup in an impromptu drone show over Tower Bridge Wednesday night. — Camila Pedrosa, Sacbee.com, 15 Oct. 2026 Glasper eventually offered the heckler a drink as a peace offering, but the impromptu music debate took up too much of the show’s 90-minute runtime. — William E. Ketchum Iii, VIBE.com, 14 Oct. 2026 Lee let me into a conference room for an impromptu screening. — E. Tammy Kim, New Yorker, 12 Oct. 2026 See All Example Sentences for impromptu

Recent Examples of Synonyms for impromptu

Adjective

Stiff was a record company that was founded on about 1,000 pounds and everything was done in an improvised fashion, including what order the songs came out from different artists.

— Chris Willman, Variety, 8 Oct. 2026
The piece contends that the threat warrants advance legal planning rather than reliance on improvised responses after a disruption occurs.

— Los Angeles Times, Los Angeles Times, 27 Sep. 2026

Definition of improvised

Adverb

Water essentially acts as a catalyst that spontaneously creates particles known as hydroxyl radicals, unstable molecules linked to aging and disease.

— Michael Hawthorne, Chicago Tribune, 22 Oct. 2026
On Wednesday — 31 days later— the front section of the vehicle appeared to spontaneously catch on fire, authorities said.

— Los Angeles Times, Los Angeles Times, 19 Oct. 2026

Definition of spontaneously

Adjective

The New Stanford Prison Experiment, Netflix’s take on a project that was always more convincing as improvisational theater than as scientific research, isn’t even television’s first crack at Zimbardo’s study.

— Judy Berman, Time, 21 Oct. 2026
These findings suggest that the audience for conversations about the soul is not shrinking, but shifting away from organized religion and toward more personal, improvisational forms of seeking.

— Literary Hub, Literary Hub, 5 Oct. 2026

Definition of improvisational

Adverb

And even though his signature coalition of the willing, the Board of Peace, has potential, it was thrown together haphazardly.

— Charles Kupchan, Foreign Affairs, 19 Oct. 2026
Each of the nine beauty favorites below can be haphazardly thrown from your vanity into your bag and through TSA.

— ElleAnna Revell, Condé Nast Traveler, 14 Oct. 2026

Definition of haphazardly

Adverb

At speeds above 93 mph (150 km/h), a roof spoiler automatically deploys and shifts angles to increase downforce and high-speed stability.

— New Atlas, New Atlas, 24 Oct. 2026
There’s also an anti-leakage mode that lowers volume and shifts the EQ automatically to reduce how much sound slips out of your ears.

— Mark Knapp, PC Magazine, 24 Oct. 2026

Definition of automatically

Adverb

But, after spending months touting the benefits that Warner assets would bring, Netflix abruptly pulled out of the auction in late February when Paramount’s Ellison upped his company’s offer.

— Meg James, Los Angeles Times, 26 Oct. 2026
After that war had ended, the period of Democratic hegemony under President Franklin Roosevelt also ended, and abruptly, with the results of the midterm of 1946.

— Ron Elving, NPR, 24 Oct. 2026

Definition of abruptly

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improbably

impromptu

impromptus

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“Impromptu.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/impromptu. Accessed 27 Oct. 2026.

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Synonyms of impromptu

adjective

noun

adverb

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