Etymologically

Etymology and origin of the French word unir

Confidence
Established
Formation
Borrowing
First attested
900s late 10th century, Passion More words from the 9th century
Borrowed from
Latin unio
Ultimate origin
Latin ūnus
Etymology tree
inherited borrowed derived
Latin ūnus
Aromanian un
Catalan un
French un
Italian un
Italian uno
Romanian un
Romanian unu
Spanish uno
Latin ūniō
French oignon
Romanian uni
French réunion
Romanian reuniune
French unir
German Union
Italian unione
Italian unire
Romanian uniune
Spanish unir
Derivations
From the same root
Latin adūnō ← ūnus
Latin noenum ← ūnus
Latin ūllus ← ūnus
Latin ūna ← ūnus
Latin ūnanimus ← ūnus
Latin ūncia ← ūnus
Latin ūndecim ← ūnus
Latin ūndēvīgintī ← ūnus
Latin ūni- ← ūnus
Latin ūnicornis ← ūnus
Latin ūnicus ← ūnus
Latin ūnilaterālis ← ūnus
Latin ūnisonus ← ūnus
Latin ūnitās ← ūnus
Latin ūniter ← ūnus
Latin ūniversus ← ūnus
Latin ūnusquisque ← ūnus
Romanian unic ← ūnus
Italian ognuno ← uno
Italian qualcuno ← uno
Romanian niciun ← un
Romanian unealtă ← un
Romanian unul ← unu
Italian riunire ← ūniō
Latin reūniō ← ūniō
Italian unito ← unire
Spanish reunir ← unir

Pronunciation

Forms

unir[1] The past participle is found first, as uniz at the end of the 10th century.[2][3]

Etymology

It is borrowed from Latin ūniō (“to join, unite”), a rare word of the Imperial period derived from ūnus (“one”).[3][4][2] Wiktionary treats it as inherited from Old French unir, itself taken from Latin.[1] Bloch and Wartburg note that the Latin past participle survived by inheritance in Old French onni (“uniform, level”).[5][6]

Cognate with Old Occitan unir, Spanish unir and Italian unire.[6]

Earliest recorded meaning

At the end of the 10th century the past participle uniz meant “bound together by affection”: in the Passion, all are united en caritad “in charity”.[2][3]

Semantic evolution

About 1180 the verb is found in unir un cunte “to bring together the elements of a story”.[2][3][7] From the end of the 12th century it has the general sense of putting elements together to make one whole.[2][3][7] In 1371 it was used of joining a territory to the Crown by a political tie.[2][3]

In the 16th century it also meant “to smooth a board, level the ground” (1539), a sense taken from the adjective uni “smooth, even”, which has since aged.[3][7] From the end of the 16th century the idea of joining took over: things joined together (1594), abstract qualities (1640, Corneille), two persons joined in marriage (1644), people brought to agreement and concord (1660), and two places linked by a way of communication (1727).[2][3][7]

Timeline

  • Late 10th century – The past participle uniz appears in the Passion.[2]
  • c. 1180 – Thomas's Tristan has unir un cunte.[2][3]
  • 1371 – Used of a county united to the Crown.[2][3]
  • 1538 – The infinitive unir is recorded by Robert Estienne.[2]
  • 1539 – Robert Estienne records the sense “to smooth, level”.[3][7]
  • 1644 – Corneille uses it for joining two people in marriage.[2][3]
  • 1660 – Corneille uses it for bringing about concord.[2][7]
  • 1727 – Used of canals linking two places.[2]

Meanings

Verb

  1. To put things together so that they form one whole; to unite, join: unir deux provinces “to unite two provinces”.[8][9]
  2. To bring or bind people together, by a feeling, an interest or a tie: l'amitié les unit “friendship unites them”.[2][8]
  3. To join two people in marriage.[8][2]
  4. To link two places by a means of communication: une route unit les deux villages “a road links the two villages”.[6][2]
  5. To combine qualities in oneself: unir la force à la douceur “to combine strength with gentleness”.[6]
  6. (reflexive) s'unir: to merge into one whole, to join forces, or to marry.[10][2]
  7. (dated) To make smooth or level.[3][6]

Word family

References

  1. ^ a b c 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 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 i j k l m Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  4. ^ Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
  5. ^ Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
  6. ^ a b c d e Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
  7. ^ a b c d e f Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
  8. ^ a b c Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert
  9. ^ Dictionnaire de français Larousse, larousse.fr/dictionnaires/francais (accessed 2024)
  10. ^ Dictionnaire Le Robert en ligne, dictionnaire.lerobert.com (accessed 2024)

Related etymologies

Cite this entry

“Unir.” Etymologically, 14 Nov. 2026, etymologically.com/fr/unir. Accessed 15 Nov. 2026.

Last edited on . ·