Etymologically

Etymology and origin of the French word impromptu

Confidence
Established
Formation
Borrowing
First attested
1651 Loret, La Muse historique More words from the 17th century
Borrowed from
Latin in promptu
Ultimate origin
Latin emō
Etymology tree
inherited borrowed derived
French impromptu
English impromptu

Pronunciation

  • /ɛ̃.pʁɔ̃p.ty/[1]

Forms

impromptu (feminine impromptue, masculine plural impromptus, feminine plural impromptues)[1]

Etymology

It is borrowed from Latin in prōmptū (“in view, at hand”), an adverbial phrase of in (“in”) and prōmptū, the ablative of prōmptus (“a being at someone's disposal”), a noun formed on the supine of prōmō (“to take out, bring forth”).[2][3][4][5][6] The verb comes from an older compound of prō- and emō, which first meant “to take” and in Classical Latin “to buy”.[3] From “in view, before everyone”, the phrase came to mean in French “on the spot, without preparation”.[4][7] The musical sense was probably taken from German Impromptu, itself from French, which has it from 1827.[3]

Earliest recorded meaning

It is first recorded in 1651, in Loret's La Muse historique, as a noun for a piece improvised on the spot.[2][3][4]

Semantic evolution

The noun first named a short occasional poem, in principle unprepared, and a short play written for a particular occasion or on a topical subject, as Molière's L'Impromptu de Versailles (1663); this is now a term of literary history.[3][8] The general sense, anything done without preparation (1669), has gone out of use.[3][2] The adjective, “improvised”, is found in Molière in 1673, and is used of a meal made from whatever is at hand from 1718.[2][5] The adverbial phrase à l'impromptu (before 1755, Saint-Simon) has disappeared, and the plain adverb (1768, Rousseau) is literary and rare.[3][2]

In music the noun names a short instrumental piece of free form, usually for the piano, from Chopin (before 1849).[3][2] In 20th-century group psychology it has also been used for a happening.[3]

Timeline

  • 1651 – First recorded, in Loret's La Muse historique, for an improvised piece.[2][4]
  • 1663 – Molière's L'Impromptu de Versailles.[3][8]
  • 1669 – Widerhold records the sense “anything done without preparation”.[2]
  • 1673 – First used as an adjective, by Molière.[2][5]
  • Before 1755 – Saint-Simon uses à l'impromptu.[2]
  • 1768 – Rousseau uses it as an adverb.[2]
  • Before 1849 – Chopin's Impromptus give the musical sense.[2][3]

Meanings

Noun

  1. (literary history) A short piece of verse or a short play composed for an occasion, in principle without preparation.[8][9][10]
  2. (music) A short instrumental piece of free form, usually for the piano.[8][9][3]

Adjective

  1. Improvised, unplanned: une fête impromptue, un déjeuner impromptu.[8][2][10]

Adverb

  1. (dated) On the spot, without preparation: répondre impromptu.[8][9][3]

Usage notes

The Grand Robert gives the pronunciation /ɛ̃pʁɔmpty/, with the ⟨m⟩ sounded, as faulty but common.[11]

References

  1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m Trésor de la langue française informatisé (2004), ATILF – CNRS & Université de Lorraine, atilf.fr/tlfi; electronic version of Imbs, Paul; Quemada, Bernard, eds. (1971–1994), Trésor de la langue française, Paris: CNRS / Gallimard
  3. ^ a b c d e f g h i j k l m Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  4. ^ a b c d Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
  5. ^ a b c Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
  6. ^ Wartburg, Walther von, et al. (1922–2002), Französisches Etymologisches Wörterbuch, 25 vols., Bonn / Leipzig / Basel: Klopp / Teubner / Zbinden, p. 9, 444a
  7. ^ Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
  8. ^ a b c d e f Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert
  9. ^ a b c Dictionnaire de français Larousse, larousse.fr/dictionnaires/francais (accessed 2024)
  10. ^ a b Dictionnaire Le Robert en ligne, dictionnaire.lerobert.com (accessed 2024)
  11. ^ Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert

Related etymologies

Cite this entry

“Impromptu.” Etymologically, 14 Nov. 2026, etymologically.com/fr/impromptu. Accessed 15 Nov. 2026.

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