Etymologically

soudain

Etymology and origin of the French word soudain

Confidence
Established
Formation
Inherited
First attested
first half of the 12th century, Cambridge Psalter (sudein)
Inherited from
Latin subitanus via Old French
Ultimate origin
Latin (subitus)

Pronunciation

  • IPA: /su.dɛ̃/[1]

Forms

soudain (feminine soudaine, masculine plural soudains, feminine plural soudaines)[1] Old French sudein (about 1120), remade as soudain about 1210; the semi-learned spelling soubdain is found in the 16th century.[2][3] The learned form subitain (1160–70) lived on in mort subitaine, still used in Walloon and Swiss dialects.[2]

Etymology

It is inherited from Old French sudein, inherited from Late Latin subitānus (5th century), an alteration of subitāneus (“sudden”), from subitus (“sudden”).[4][2][3][5] The same Latin adjective gave the learned subit.[2][3]

Cognate with Old Occitan soptan and Italian subitano.[6][7]

Earliest recorded meaning

In the Cambridge Psalter (first half of the 12th century) sudein describes what happens in a very short time.[4]

Semantic evolution

Of people it meant quick to act (late 14th century, Froissart), a sense lost in the 18th century, and quick-tempered (1380), still found in 1700.[4][2]

The adverb is first recorded in 1487 meaning “at once”; the modern sense “all of a sudden” appears in 1549, and tout soudain from about 1530.[4][2] The conjunction soudain que “as soon as” (1538) was no longer in use by 1721, according to the Dictionnaire de Trévoux.[2]

Timeline

  • c. 1120 – Sudein, in the Cambridge Psalter.[2][4]
  • c. 1210 – The form soudain.[2][3]
  • Late 14th century – “Quick to act”, in Froissart.[4]
  • 1487 – Adverb “at once”.[4]
  • 1549 – Adverb “suddenly”.[2]

Meanings

Adjective

  1. sudden, happening in a very short time and without warning: une mort soudaine, une envie soudaine.[8][9]

Adverb

  1. suddenly, all at once: soudain, un orage éclata.[10][1]

Word family

  • soudaineté
  • soudainement

References

  1. ^ a b c Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  3. ^ a b c d Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
  4. ^ a b c d e f g 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
  5. ^ Wartburg, Walther von, et al. (1922–2002), Französisches Etymologisches Wörterbuch, 25 vols., Bonn / Leipzig / Basel: Klopp / Teubner / Zbinden, p. 12, 334b
  6. ^ Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
  7. ^ Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
  8. ^ Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert
  9. ^ Dictionnaire Le Robert en ligne, dictionnaire.lerobert.com (accessed 2024)
  10. ^ Dictionnaire de français Larousse, larousse.fr/dictionnaires/francais (accessed 2024)

Related etymologies

Cite this entry

“Soudain.” Etymologically, 18 Oct. 2026, etymologically.com/fr/soudain. Accessed 18 Oct. 2026.

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