Etymologically

supposer

Etymology and origin of the French word supposer

Confidence
Established
Formation
Borrowing
First attested
c. 1120, Psautier d'Oxford
Borrowed from
Latin suppono
Ultimate origin
Latin (pōnō)
Etymology tree
inherited borrowed derived
Latin suppono
French supposer

Pronunciation

  • IPA: /sy.po.ze/[1]

Forms

supposer[1]

Etymology

It is borrowed from Latin suppōnō (“to put under; to substitute; to subject”), with its form adapted to poser.[2][3][4][5][1][6] The Latin verb is from sub (“under”) and pōnō (“to put, place”) (see pondre).[3][7] The sense “to assume” developed in French, or in Medieval Latin after the grammarians' “suppositivus” “hypothetical”, a calque of Ancient Greek ὑποθετικός (hupothetikós), Bloch and Wartburg think the verb took it from “supposition”.[2][3][4][5]

Compare Spanish suponer, Portuguese supor and Italian sopporre.[8]

Earliest recorded meaning

The Psautier d'Oxford (mid-12th century) has it in the concrete Latin sense “to place under”, which lasted until the early 17th century (Stoer, 1628).[2][3]

Semantic evolution

In Old French it also meant to subject to a jurisdiction (1278).[3] From about 1270–80 it meant to presume or conjecture (Clef d'Amour), and to posit as a hypothesis, first with an attribute (supposer le problème résolu); supposé que is found about 1330 (Guillaume de Digulleville).[2][3] Oresme (1370) uses it for “to require as a necessary condition”: elettion … suppose liberté et prudence.[2][8] From Latin law came “to substitute” (1520) and “to pass off as genuine” (1538), as in supposer un testament or supposer un enfant (1552).[2][5][7]

Timeline

  • c. 1120 – “To place under”, Psautier d'Oxford.[4]
  • 1278 – To subject to a jurisdiction.[3]
  • 1280 – “To conjecture”, Clef d'Amour.[2]
  • c. 1330 – Supposé que.[2]
  • 1370 – To imply, Oresme.[2]
  • 1538 – To pass off as genuine, Robert Estienne.[2]

Meanings

Verb

  1. To suppose, assume as a hypothesis: supposons que vous ayez raison, à supposer que, en supposant que.[9][1]
  2. To presume, think likely: je suppose qu'il viendra.[1][8]
  3. To imply, require as a condition: le succès suppose du travail.[2][1]
  4. To attribute (a quality) to someone: vous me supposez un crédit que je n'ai pas.[8]
  5. (law) To substitute fraudulently, pass off as genuine: supposer un testament.[2][5]

Word family

  • supposé
  • supposable
  • présupposer
  • présupposition

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 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 Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  4. ^ a b c Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
  5. ^ a b c d Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
  6. ^ Wartburg, Walther von, et al. (1922–2002), Französisches Etymologisches Wörterbuch, 25 vols., Bonn / Leipzig / Basel: Klopp / Teubner / Zbinden, p. 8, 72b
  7. ^ a b Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
  8. ^ a b c d Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
  9. ^ Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert

Related etymologies

Cite this entry

“Supposer.” Etymologically, 18 Oct. 2026, etymologically.com/fr/supposer. Accessed 18 Oct. 2026.

Last edited on . ·