Etymologically

soustraire

Etymology and origin of the French word soustraire

Confidence
Established
Formation
Borrowing
First attested
1119 Philippe de Thaon, Comput More words from the 12th century
Borrowed from
Latin subtraho via Old French
Ultimate origin
Latin trahō
Etymology tree
inherited borrowed derived
Latin trahō
Italian trarre
Spanish traer
Latin subtrahō
Italian sottrarre
French soustraire
From the same root
Italian tratta ← trahō
Latin abstrahō ← trahō
Latin attrahō ← trahō
Latin contrahō ← trahō
Latin dētrahō ← trahō
Latin distrahō ← trahō
Latin extrahō ← trahō
Latin intertrahō ← trahō
Latin intrahō ← trahō
Latin pertrahō ← trahō
Latin prōtrahō ← trahō
Latin retrahō ← trahō
Latin tractim ← trahō
Latin tractiō ← trahō
Latin tractō ← trahō
Latin tractus ← trahō
Latin trāgula ← trahō
Latin trāma ← trahō
Italian tranne ← trarre
Latin subtractiō ← subtrahō

Pronunciation

  • /sus.tʁɛʁ/[1]

Forms

soustraire[1] Old French sustraire, sostraire, soztraire, sotraire; later substraire (late 15th century) and soubtraire (1538 to the early 17th century).[2][3][4]

Etymology

It is inherited from Old French sustraire, borrowed from Latin subtrahō (“to draw from beneath, take away”),[1][2][5] formed from sub- (“under”) and trahō (“to pull, drag”), the verb that gave traire.[3][6] The first syllable was remade after words such as souscrire and after sous,[2][7][3] and the verb is conjugated like that verb.[1][8] Nicot (1606) and Cotgrave (1611) still have the headword ⟨soubtraire⟩, and ⟨soustraire⟩ is the headword from Pomey (1671).[2]

Littré notes that the pronunciation with /s/ before /t/ is irregular, and that in the 16th century the word was written ⟨soubstraire⟩ but said without the ⟨b⟩.[9] Cognate with Old Occitan sostraire and Italian sottrarre.[9]

Earliest recorded meaning

Philippe de Thaon uses sustraire in his Comput (1119) in the sense “to take away, deduct”.[2][6] In his Bestiaire (1121–1134) he writes Adam fut sustrait De sun saint paraïs (“Adam was taken away from his holy paradise”).[2]

Semantic evolution

From the start the verb meant taking something from someone so as to deprive them of it, often by trickery or fraud: Benoît de Sainte-Maure has soztraire in this sense about 1165.[3][2] From it came “to deprive of” (1226), now out of use, and “to make disappear by theft”, which is still alive.[3] In the Middle Ages it could also simply mean “to withdraw”.[7]

The reflexive verb first meant “to withdraw”, said of the sun (1160–1170); since the early 13th century it has meant “to free oneself from”: Villehardouin writes of people who s'estoient sotrait a l'obedience de Rome (“had withdrawn from obedience to Rome”).[3][2] Soustraire qqn de “to shield someone from a danger” (early 13th century) became soustraire qqn à about 1580.[3]

The arithmetical sense dates from the 13th century,[7][6] and Nicolas Chuquet's arithmetic of 1484 has the form soustraire.[2] The noun soustraction (1484, earlier subtraction from the 12th century) follows the verb's senses.[7]

Timeline

  • 1119 – Sustraire “to take away” appears in Philippe de Thaon's Comput.[2]
  • 1121–1134 – Philippe de Thaon's Bestiaire uses it for depriving someone of something.[2]
  • c. 1165 – Benoît de Sainte-Maure has soztraire “to take away by trickery”.[2]
  • c. 1208 – Villehardouin uses the reflexive verb for “to free oneself from”.[2]
  • 13th century – The arithmetical sense is recorded.[7][6]
  • 1484 – Nicolas Chuquet writes soustraire in his Triparty en la science des nombres.[2]
  • 1538 – The spelling soubtraire is recorded; it lasts until the early 17th century.[3]
  • 1588 – Montaigne uses soustraire à “to shield from”.[6]
  • 1671 – Pomey's dictionary has the headword soustraire.[2]

Meanings

Verb

  1. To take something away from someone, usually by trickery or fraud; to steal: soustraire des lettres d'un tiroir.[10][2][9]
  2. Soustraire qqn ou qqch. à: to shield someone or something from what threatens it.[10][9]
  3. (arithmetic) To subtract one number from another.[9][1]
  4. (reflexive) Se soustraire à: to evade, escape from or free oneself of a duty or authority: se soustraire à une corvée.[10][1]

References

  1. ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n o p 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 Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  4. ^ Anglo-Norman Dictionary (AND2), Aberystwyth University, anglo-norman.net (2nd ed., 2005–)
  5. ^ Wartburg, Walther von, et al. (1922–2002), Französisches Etymologisches Wörterbuch, 25 vols., Bonn / Leipzig / Basel: Klopp / Teubner / Zbinden, p. 12, 367b
  6. ^ a b c d e Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
  7. ^ a b c d e Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
  8. ^ Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
  9. ^ a b c d e Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
  10. ^ a b c Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert

Related etymologies

Cite this entry

“Soustraire.” Etymologically, 14 Nov. 2026, etymologically.com/fr/soustraire. Accessed 15 Nov. 2026.

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