Etymologically

réciproque

Etymology and origin of the French word réciproque

Confidence
Established
Formation
Borrowing
First attested
1300–1350 Aalma glossary More words from the 13th century
Borrowed from
Latin reciprocus
Ultimate origin
Latin reciprocus
Etymology tree
inherited borrowed derived
Latin reciprocus
English reciprocal
French réciproque
Romanian reciproc

Pronunciation

  • /ʁe.si.pʁɔk/[1]

Forms

réciproque (plural réciproques)[1]

Etymology

It is borrowed from Latin reciprocus (“returning to its starting point”),[2][3][1][4] which in Latin also meant “alternating, reversed, echoed” and, in grammar, “reflexive”.[5][6] The Latin adjective was used to render Ancient Greek παλίντονος (palíntonos, “bent back”) and ἀντιστρέφων (antistréphōn, “turning the other way”).[5] It is old but rare, and is explained as a compound of two assumed adjectives built on the particles re- and pro-, “going back and forward”.[5][7]

The grammatical use in ⟨pronom réciproque⟩ is a calque of reciprocum pronomen (“reflexive pronoun”), and the medical terms of the 20th century were taken from the English word reciprocal.[2] Cognate with Old Occitan reciproc.[7]

Earliest recorded meaning

Its first record, in the first half of the 14th century, is the glossary Aalma, which renders Latin reciprocus by reciproques, reflechissens (“reciprocal, reflecting”).[2] It meant something that takes place between two people or two things acting on each other.[2][3]

Semantic evolution

Grammarians took the word up in the 15th century: a pronom receproc (about 1400) was a reflexive pronoun, and verbe réciproque (1606) a reflexive verb.[2] From the Renaissance it spread to dialectic, with termes réciproques (1589) for terms that can stand for each other, and then to logic and mathematics: propositions réciproques (1678) and, in algebra, proposition réciproque (1800).[2] Furetière recorded the logical and mathematical senses in 1690.[3][5]

As a masculine noun it meant “the like in return”, in au réciproque (1451) and rendre le réciproque (1605); this use was called dated in 1893 and has gone out of use.[2][5] The TLF-Étym rejects the 1409 record from the chronicle of Boucicaut, cited by Littré, Godefroy, the FEW and the TLFi, because it is missing from the scholarly edition of the text.[2] The feminine noun, first in faire la réciproque (1555), survives, and in logic and mathematics la réciproque is short for the converse proposition.[2][5]

Timeline

  • 1300–1350 – The Aalma glossary renders Latin reciprocus by reciproques.[2]
  • c. 1380 – The date given by Bloch and Wartburg, the DHLF and the Grand Robert.[8][5][9]
  • c. 1400 – A grammar calls se a pronom receproc.[2]
  • 1451 – Au réciproque “in return” is recorded.[2]
  • 1466 – Pierre Michault writes of a construction réciproque.[2][3]
  • 1555 – Faire la réciproque “return the favour” appears.[2]
  • 1589 – Termes réciproques appears in dialectic.[2]
  • 1606 – Masset uses verbe réciproque.[2][3]
  • 1678 – Bernier uses propositions réciproques.[2]
  • 1690 – Furetière records the senses in logic and mathematics.[3][6]
  • 1729 – Réciprocité is borrowed from Late Latin.[8][5]
  • 1800 – Proposition réciproque appears in algebra.[2]

Meanings

Adjective

  1. mutual, reciprocal: exchanged equally between two people or groups, or acting from each of two things on the other.[3][10][6]
  2. (grammar) Of a pronominal verb or pronoun expressing an action that two or more subjects do to one another.[2][5]
  3. (logic) Of two propositions in which the subject of one can become the predicate of the other, and the other way round.[10][2]
  4. (mathematics) Of a proposition obtained from another by exchanging its hypothesis and its conclusion, or of an inverse function or transformation.[2][6][1]

Noun

  1. (feminine) The reverse, the opposite action: rendre la réciproque.[2][1]
  2. (feminine, logic, mathematics) The converse of a proposition or theorem.[5][1]
  3. (masculine, archaic) The like in return.[2]

Word family

  • réciproquement

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 q r s t u v w Steinfeld, Nadine; Buchi, Éva, eds. (2005–), TLF-Étym: révision des notices étymologiques du Trésor de la langue française informatisé, Nancy: ATILF
  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. ^ Wartburg, Walther von, et al. (1922–2002), Französisches Etymologisches Wörterbuch, 25 vols., Bonn / Leipzig / Basel: Klopp / Teubner / Zbinden, p. 10, 149b
  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. ^ a b Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
  8. ^ a b Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
  9. ^ Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
  10. ^ a b Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert

Related etymologies

Cite this entry

“Réciproque.” Etymologically, 14 Nov. 2026, etymologically.com/fr/r%C3%A9ciproque. Accessed 15 Nov. 2026.

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