Etymologically

soir

Etymology and origin of the French word soir

Confidence
Established
Formation
Inherited
First attested
late 10th century, Passion de Clermont
Inherited from
Latin sero via Old French
Ultimate origin
Latin (sērus)
Etymology tree
inherited borrowed derived
Latin sero
French soir
Latin series
English series
Latin dissero
Latin sator

Pronunciation

  • IPA (Europe): /swaʁ/[1]
  • IPA (Canada, French, standard): /swɑːʁ/[1]
  • IPA: /swɛː(ɾ)/[1]
  • IPA: /swɛːʁ/[1]

Forms

soir m (plural soirs)[1] Old French ser (about 980), seir (1080), soir (about 1160).[2][3][4]

Etymology

It is inherited from Old French seir, inherited from Latin sērō (“late, too late”), an adverb formed from sērus (“late”).[5][2][6][3][7] Old Occitan had both ser (about 1135), from “sērō”, and “sera” (about 1160), from a Late Latin noun “sēra” “evening” that also gave Italian sera.[2][6] Spanish tarde and Portuguese tarde and Catalan “tarda” “evening” come in the same way from Latin tardē (“slowly; late”), while classical vesper survives in vêpres.[2][6] Rey compares “sērus” with Sanskrit सायम् (sāyám, “evening”) and Old Irish “sír” “long”.[2]

Earliest recorded meaning

It is first found in the Passion de Clermont (late 10th century) as ser, the last hours of the day.[5][2]

Semantic evolution

From Old French on it was used after the name of a day and after hier and demain (her seir, 1080).[2][5] A seyr et a matin “unceasingly” (late 11th century) became le soir et le matin (1480); du soir au matin (1668) and du matin au soir (1670) once meant “very quickly”.[2] The word meant “the west” (1341) and, figuratively, old age (1552, le soir de la vie, 1635).[2][5]

In 1690 it was used of the second half of the afternoon, a sense kept in journal du soir, and also of the part of the night up to bedtime, a sense later taken by soirée.[2][5] À ce soir is recorded in 1756, Quebec French says à soir for ce soir, and in African French soir may mean the afternoon.[8][2]

Timeline

  • Late 10th century – Ser in the Passion de Clermont.[5]
  • 1080 – Her seir “yesterday evening”, in the Chanson de Roland.[5][2]
  • c. 1160 – The form soir.[3][4]
  • 1341 – “The west”.[2]
  • 1552 – “Old age”, in Ronsard.[5]
  • 1564 – Soirée.[6]
  • 1690 – “The second half of the afternoon”, in Furetière.[5]
  • 1756 – À ce soir.[8]

Meanings

Noun

  1. Evening, the end of the day: le soir tombe, tous les soirs.[9][1]
  2. Ce soir: this evening, tonight, à ce soir, see you tonight.[4][8]
  3. (dated) The second part of the afternoon: quatre heures du soir, journal du soir.[4][2]
  4. (Africa) The afternoon.[2]
  5. (literary) Old age: le soir de la vie.[5][4]

Word family

  • serein
  • soirée
  • bonsoir

Usage notes

Wiktionary also records soir as a spelling of the verb seoir “to suit” after the 1990 spelling reform.[1]

References

  1. ^ a b c d e f g Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n o Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  3. ^ a b c Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
  4. ^ a b c d e Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
  5. ^ a b c d e f g h i j 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
  6. ^ a b c d 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. 11, 516b
  8. ^ a b c Quemada, Bernard, ed. (1959–2006), Datations et documents lexicographiques (Base historique du vocabulaire français, BHVF), Paris: Klincksieck / CNRS / Champion; ATILF
  9. ^ Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert

Related etymologies

Cite this entry

“Soir.” Etymologically, 18 Oct. 2026, etymologically.com/fr/soir. Accessed 18 Oct. 2026.

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