Etymologically

Etymology and origin of the French word résoudre

Confidence
Established
Formation
Borrowing
First attested
early 13th century, Reclus de Molliens
Borrowed from
Latin resolvo
Ultimate origin
Latin solvō
Etymology tree
inherited borrowed derived
Latin resolvo
English resolve
French résoudre
Italian risolvere

Pronunciation

Forms

résoudre[1] Old French past participle resous (late 12th or early 13th century); Middle French résouldre.[2][3][1] The past participles are résolu and the rarer résous, feminine résoute.[4][5]

Etymology

It is borrowed from Latin resolvō (“to untie, loosen; to dissolve; to pay; to explain”), adapted after the Old French verb soudre (“to pay”), itself from Latin solvō (“to loosen, release; to pay; to solve”).[5][6][2][7] The Latin verb is formed from intensive re- and the simple verb.[5][2] Before the infinitive, Old French only had the participle resout, from resolūtus, mostly as a technical term for “broken up, dissolved”.[6] Wiktionary instead treats the verb as inherited, through Old French resoldre.[1] The verb displaced the more direct borrowing résolver (1370).[5]

Earliest recorded meaning

It is first found in the early 13th century in Reclus de Molliens, as estre resous “to be paid back, compensated” (of a loss suffered by someone), the sense of Old French soudre.[3][5] This sense, still seen in se résoudre de “to pay off” in 1498, died out in the 16th century.[3][5]

Semantic evolution

The active verb appears about 1300 with the physical sense “to break up (a body) into its elements, make disappear”, as in Oresme's corps mixtes … resoluz en poudre (1377); by extension it meant turning something into a simpler state (about 1462).[5][3] The pronominal se résoudre meant “to separate, divide” (about 1360) and later “to dissolve” (1690).[5] Technical uses followed: in medicine, making a tumour disappear (about 1560), in law, annulling a contract (1668, La Fontaine), and in music, resolving a dissonance (1752, Rousseau).[5][2]

In the 15th century the verb took the sense “to find the solution to”, first in logic and then in mathematics (résoudre une équation, 1765).[5] The sense “to decide” developed in Middle French, with resoldre de (1356); résoudre quelqu'un à dates from the late 16th century and se résoudre à from the early 17th.[5][6] The participle résolu took the sense “firm in one's purpose” in 1478–1480, the only one of its senses to survive.[5] The main senses are shared out between two nouns: résolution for dissolving and deciding, solution for solving.[5]

Timeline

  • Early 13th century – Estre resous “to be repaid”, in Reclus de Molliens.[3]
  • 1356 – Resoldre de “to decide to”.[5]
  • 1377 – Oresme uses it for breaking bodies up into their elements.[3]
  • 1478–1480 – Résolu “determined”.[5]
  • c. 1560 – A medical sense, in Ambroise Paré.[2]
  • 1668 – “To annul (a contract)”, in La Fontaine.[3][2]
  • 1752 – The musical sense, in Rousseau.[2]
  • 1765 – Résoudre une équation.[5]

Meanings

Verb

  1. (literary or technical) To dissolve, break up or turn into something else: la glace se résout en eau.[4][8]
  2. (medicine) To make a swelling or tumour disappear gradually.[4][8]
  3. (law) To annul a contract or sale.[4][8]
  4. To solve, find the answer to: résoudre un problème, résoudre une équation.[1][5]
  5. To decide, determine: résoudre de partir, résoudre quelqu'un à, to persuade someone to.[5][8]
  6. Se résoudre à: to make up one's mind to, bring oneself to.[1][5]

Word family

  • irrésolu
  • résolu

References

  1. ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
  3. ^ 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
  4. ^ a b c d Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert
  5. ^ a b c d e f g h i j k l m n o p q r s Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  6. ^ a b c Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
  7. ^ Wartburg, Walther von, et al. (1922–2002), Französisches Etymologisches Wörterbuch, 25 vols., Bonn / Leipzig / Basel: Klopp / Teubner / Zbinden, p. 10, 302b
  8. ^ a b c d Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette

Related etymologies

Cite this entry

“Résoudre.” Etymologically, 22 Oct. 2026, etymologically.com/fr/r%C3%A9soudre. Accessed 22 Oct. 2026.

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