Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- adj. Prompted by the occasion rather than being planned in advance: an impromptu party.
- adj. Spoken, performed, done, or composed with little or no preparation; extemporaneous: a few impromptu remarks. See Synonyms at extemporaneous.
- adv. With little or no preparation; extemporaneously.
- n. Something, such as a speech, that is made or done extemporaneously.
- n. Music A short composition, especially for the piano, performed in an offhand or extemporized style.
Century Dictionary and Cyclopedia
- Offhand; without previous study or preparation: as, a verse written impromptu.
- Prompt; offhand; extempore; extemporized for the occasion: as, an impromptu epigram.
- n. Something said or written, played, etc., at the moment, or without previous study or preparation; an extemporaneous composition or performance.
- n. In music: An extemporized composition; an improvisation.
- n. A composition in irregular form, as if extemporized; a fantasia.
Wiktionary
- adj. Improvised; without prior preparation; extemporaneous; unplanned.
- n. music a short musical composition for an informal occasion often with the character of improvisation and usually to be played solo.
- n. any composition, musical or otherwise, that is created on the spot without preparation.
GNU Webster's 1913
- adv. Offhand; without previous study; extemporaneous; extempore.
- n. Something made or done offhand, at the moment, or without previous study; an extemporaneous composition, address, or remark.
- n. (Mus.) A piece composed or played at first thought; a composition in the style of an extempore piece.
WordNet 3.0
- n. an extemporaneous speech or remark
- adv. without advance preparation
- n. a short musical passage that seems to have been made spontaneously without advance preparation
- adj. with little or no preparation or forethought
Etymologies
- From Latin imprōmptus ("not ready"), from im- + prōmptus ("ready, at hand"). (Wiktionary)
- French, from Latin in prōmptū, at hand : in, in; see in-2 + prōmptū, ablative of prōmptus, readiness, from past participle of prōmere, to bring forth; see prompt. (American Heritage® Dictionary of the English Language, Fourth Edition)
Examples
“They are resourceful people and impromptu is the mode of operation they most relish.”
“Further away from the volcano, fears were rising that diseases could appear in impromptu refugee camps where scores of evacuees are now taking temporary shelter, unsure of when they might be able to return.”
The Wall Street Journal: Toll From Indonesia Tsunami, Volcano Reaches 441
“What I find most disturbing about these stories is the fact that some of the news media take it upon themselves to disclose vital national security programs, thereby making it more difficult for us to prevent future attacks against the American people," Mr. Cheney said, in impromptu remarks at a fund-raising luncheon for a Republican Congressional candidate in Chicago.”
“They gather - loud, bronzed, and disgustingly smooth-skinned - in impromptu youth rallies, blocking pavements, filling buses and generally annoying the hell out of the locals.”
“He proceeded to give his entire response to the sex abuse question in English, impromptu fashion.”
“In front of the little sundries store, Dona Lupe's, across from our house, people gather on the weekends to visit and sometimes engage in impromptu entertainment - I believe the tuba player participates actively in these little pick-up gigs.”
“I do not deal in impromptu speeches, and have but little belief in the impassioned orator who relies upon the stimulus of the moment; but I soon found that it would be better and wiser, and that, perhaps, I could more truly express my thought, if I were to write down what I meant, and what I meant to convey to you, upon the first part of this most important subject.”
“The word impromptu is sufficiently self-explanatory, but it needs to be pointed out that this work of”
“Nikki Haley flexed her political muscles Tuesday night when she called an impromptu press conference to insist that the Senate finish a bill that would create a new Department of Administration. ...”
“Nikki Haley flexed her political muscles Tuesday night when she called an impromptu press conference to insist that the Senate finish a bill that would create a new Department of Administration.”
Lists
These user-created lists contain the word ‘impromptu’.
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probablyankita's list
Words are all I have to take your heart away
apartheid, techno-klutz, logorrheic, gordian knot, anodyne, odor of sanctity, finders keepers, foot-in-mouth dis..., dutch uncle, masquerade, smoke signals, furtive glance and 320 more...
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GRE Barrons Wordlist
A complete Barron's Wordlist for GRE preparation. Your online flashcard replacement.
abase, abash, abate, abbreviate, abdicate, aberrant, aberration, abet, abeyance, abhor, abject, abjure and 4087 more...
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®emovies
Movies or TV shows where the titles are also common words, generally one-word titles.
lost, alien, bug, elephant, siege, gladiator, flock, captivity, piano, roots, freaks, moonstruck and 269 more...
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Here and Now
Words related to the mental state of "being in the present in the moment".
improvisation, nolens volens, extempore, autoschediastic, in medias res, willy-nilly, egersis, immanence, nunc pro tunc, spontaneity, observant, concentration and 55 more...
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Lesson 15
complement, component, conjure, emphasize, homage, impromptu, lush, medley, oblige, pretentious, prowess, rustic and 3 more...
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15
complement, component, conjure, emphasize, homage, impromptu, lush, medley, oblige, pretentious, prowess, rustic and 3 more...
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SAT Words
Know these common SAT words
taciturn, docile, expedient, superfluous, eclectic, impromptu, dogmatic, invidious, rhetoric, tenacious, pretentious, parsimony and 14 more...
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big book gre
abase, abbess, abbey, abbot, abdicate, abdomen, abdominal, abduction, abed, aberration, abet, abeyance and 6689 more...
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French words to throw around next ti...
This list is endorsed by the International Brotherhood of Mimes, Jerry Lewis, and the Society for the Propagation of French Stereotypes.
bon mot, bon vivant, boulevardier, accoutrement, ménage à trois, melee, coup de grace, elan, bete noir, agent provocateur, crème de la crème, haut monde and 53 more...
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Just 'cause I like 'em, I
irenic, inimical, ignotism, infrangible, internecine, illumine, ingot, imposter, iconoclast, indefeasible, indefatigable, impingement and 184 more...
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Personal Vocabulary List
All my favourite words that I come across!
veritable, incongruence, rigamorole, letcherous, revolting, repulsive, reputrid, rapatious, forays, guise, placate, paradigm and 1162 more...
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Latinate
lorem ipsum, citius, altius, fortius, curriculum vitae, bona fide, terra nullius, habeas corpus, quidnunc, voir dire, emeritus, quincunx and 99 more...
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The Sog Collection
My big word list.
chaos, flaccid, empirical, flotsam, cacophony, grumble, assuage, awe, romance, mortality, coalesce, fortuitous and 3282 more...
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The braggadocio recipe
A selection of English* words ending with a vowel (except "y", "ea", ie", "ee", "oo", "ea", "ou") that is REALLY pronounced.
My favorite English words, by the way.
The good twin of The ...braggadocio, recipe, encyclopedia, solo, gnu, flu, maybe, apocope, mini, arrhythmia, folio, stereo and 197 more...
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SAT PSAT ALPHABETICAL I
iconoclast, idiosyncrasy, ignoble, ignominious, illicit, illusory, illustrious, imbibe, imbue, immaculate, immaterial, immolate and 155 more...
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Musical words
nocturne, flat, sharp, waltz, etude, opera, soprano, alto, tenor, bass, cello, flute and 131 more...
Tweets
Looking for tweets for impromptu.

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