Etymologically

soit

Etymology and origin of the French word soit

Confidence
Established
Formation
Inherited
First attested
c. 1170, Chrétien de Troyes, Erec et Enide (ou soit… ou soit)
Inherited from
Latin sum
Ultimate origin
Latin (sum)
Etymology tree
inherited borrowed derived
Latin sum
French soit
Latin possum
Latin possibilis
English possible
French possible
English impossible
French impossible

Pronunciation

Forms

soit (conjunction, adverb); pronounced /swa/, but /swat/ before a vowel and as an adverb[2][3]

Etymology

It is the third person singular of the present subjunctive of être,[2][4][5][6] which continues inherited from Latin sit (“let it be”), the subjunctive of sum (“to be”).[1] In older French, when it was still felt as a verb, it was put in the plural when the construction required it (“soient religieus, soient seculiers”, Joinville), and replaced by fust in a past context (Calvin).[7]

Earliest recorded meaning

Chrétien de Troyes's Erec et Enide (about 1170) has ou soit… ou soit to mark an alternative.[2][4]

Semantic evolution

Guernes de Pont-Sainte-Maxence (1174–76) has seit… u, and Wace (1170–80) the series soit… soit… soit.[2] Soit que with the subjunctive is in Calvin (1541), and soit que… soit que in Montaigne (1580); classical French also had soit ou… ou (Amyot, 1559).[2][4][3] As an adverb of assent with a concessive value, “so be it”, it dates from the 13th century.[2][4]

The Académie (1835) records it for introducing a supposition, soit un triangle, notably in setting out a mathematical problem; in the 20th century it also introduces an explanation, meaning “that is to say”.[2][4][3]

Timeline

  • c. 1170 – Ou soit… ou soit, Chrétien de Troyes.[2]
  • 1170–80 – Soit… soit… soit, Wace.[2]
  • 13th century – Adverb of assent.[2]
  • 1541 – Soit que with the subjunctive, Calvin.[2]
  • 1580 – Soit que… soit que, Montaigne.[2]
  • 1835 – “Supposing, let … be”, Académie.[2]
  • 1933 – “That is to say”.[3]

Meanings

Conjunction

  1. Soit… soit: either… or: soit l'un, soit l'autre, soit que… soit que (with the subjunctive), whether… or.[6][1]
  2. That is, namely: trois mètres, soit environ dix pieds.[3][1]
  3. (mathematics) Let… be: soit un triangle ABC.[2][1]

Adverb

  1. So be it, all right (expressing assent, often reluctant): Soit ! j'accepte.[2][6]
  2. Tant soit peu: ever so little.[6]

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 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 Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
  4. ^ a b c d e Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  5. ^ Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
  6. ^ a b c d Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert
  7. ^ Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette

Related etymologies

Cite this entry

“Soit.” Etymologically, 18 Oct. 2026, etymologically.com/fr/soit. Accessed 18 Oct. 2026.

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