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Definitions

impromptu

[im-promp-too, -tyoo] / ɪmˈprɒmp tu, -tyu /
ADJECTIVE
unrehearsed, improvised
Synonyms
STRONGEST
offhand spontaneous unscripted
STRONG
ad-lib fake
WEAK
dashed off extemporaneous extempore extemporized faked improv improviso off the cuff played by ear shot from the hip spur-of-the-moment thrown off tossed off unpremeditated unprepared unstudied vamped whipped up winged
Antonyms
STRONGEST
deliberate planned
ADVERB
unrehearsed, improvised
Synonyms
STRONGEST
offhand spontaneous unscripted
STRONG
ad-lib fake
WEAK
dashed off extemporaneous extempore extemporized faked improv improviso off the cuff played by ear shot from the hip spur-of-the-moment thrown off tossed off unpremeditated unprepared unstudied vamped whipped up winged

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Hull’s homage to Spirit was seen by more than 1 million people on the Points Guy’s Instagram account — and hundreds of commenters shared their own impromptu eulogies.

From MarketWatch • May 6, 2026

My husband and I burst out laughing – not at that scene, or the clerk’s impromptu theatrics, but at this injection of delight into an otherwise mundane errand.

From Salon • May 2, 2026

These impromptu conversations provide new insights, useful information and a sense of connection.

From The Wall Street Journal • Apr. 18, 2026

A few days before the Final Four, they decided to make an impromptu trip to Arizona to cheeron UCLA.

From Los Angeles Times • Apr. 4, 2026

There would be no historical single slide across the river, no amazing story to tell, and no impromptu celebration complete with blackberry Snow Delights.

From "The Very, Very Far North" by Dan Bar-el

Vocabulary lists containing impromptu

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