Etymologically

Etymology and origin of the French word solidaire

Confidence
Established
Formation
Derivation
First attested
1462 More words from the 15th century
Ultimate origin
Latin solidus
Etymology tree
inherited borrowed derived
Latin solidus
French sou
English sou
Italian sodo
Spanish sueldo
English solidus
French solide
Romanian solid
French solidaire
Italian solido
Derivations
From the same root
English solid ← solidus
Latin solidata ← solidus
Latin solidō ← solidus
French solidifier ← solide

Pronunciation

  • /sɔ.li.dɛʁ/[1]

Forms

solidaire (plural solidaires)[1]

Etymology

It is formed from French solide + -aire to render the legal phrase Latin in solidum (“for the whole”).[2][3][1] Bloch and Wartburg, the DHLF and the GLLF derive it directly from that phrase, which was also usual in medieval legal Latin.[4][5][6] In it solidum is the neuter of solidus (“solid, whole”), used as a noun for the whole of a sum.[5][6]

Earliest recorded meaning

Bloch and Wartburg date it to 1462 as a legal term, “common to several people so that each answers for the whole”;[4][7] the TLFi's first record is obligation solidaire in Jean Duret's commentary on the customs of the Bourbonnais (1584).[2] The DHLF notes that the word also meant “complete, entire”.[5]

Semantic evolution

As a legal term it was applied to an obligation (Cotgrave, 1611), then to the persons bound by it, first in the plural (1718).[5][6] In the 18th century it widened:[4] Caylus uses it before 1747 of people bound by common interests and responsibilities,[5][2] whence être solidaire de someone (1825) and, in the 20th century, se déclarer solidaire de someone.[5][6] From 1834 (Béranger) it is said of things that depend on one another, and since 1861 (Cournot) also of machine parts linked in one movement.[5][2]

English borrowed it as solidary in 1818, “joint and several”.[8]

Timeline

  • 1462 – First record as a legal term.[4]
  • 1584 – Jean Duret writes obligation solidaire.[2]
  • 1693 – The derivative solidarité appears as a legal term.[4][5]
  • 1739–1747 – Caylus uses it of people sharing interests.[2]
  • 1834 – Béranger uses it of things depending on each other.[2]
  • 1861 – Cournot uses it in mechanics.[2]

Meanings

Adjective

  1. (law) Of an obligation, binding several people so that each is liable for the whole, and of the persons so bound: débiteurs solidaires.[9][2][3]
  2. Of people, bound to others by common responsibility and interests, showing solidarity: être solidaire de someone.[9][10][5]
  3. Of things, interdependent.[10][2][1]
  4. (mechanics) Of parts, linked so that they move together.[2][5]

Word family

Usage notes

In Belgium a solidaire was also a member of an atheist association.[11]

References

  1. ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k 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 Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
  4. ^ a b c d e Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
  5. ^ a b c d e f g h i j Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  6. ^ a b c d Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
  7. ^ Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
  8. ^ Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  9. ^ a b Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert
  10. ^ a b Dictionnaire de français Larousse, larousse.fr/dictionnaires/francais (accessed 2024)
  11. ^ Quemada, Bernard, ed. (1959–2006), Datations et documents lexicographiques (Base historique du vocabulaire français, BHVF), Paris: Klincksieck / CNRS / Champion; ATILF
Cite this entry

“Solidaire.” Etymologically, 14 Nov. 2026, etymologically.com/fr/solidaire. Accessed 15 Nov. 2026.

Last edited on . ·