Etymologically

soi

Etymology and origin of the French word soi

Confidence
Established
Formation
Inherited
First attested
2nd half of the 10th century, Vie de saint Léger
Inherited from
Latin se via Old French
Ultimate origin
Proto-Indo-European (*swé)

Pronunciation

Forms

soi m or f[1] Old French se (in the Vie de saint Léger), then sei (11th century) and soi (about 1160–1175).[2][3][4] The Académie spelled it soy in 1694 and 1718, soi from 1740.[2]

Etymology

It is inherited from Old French sei, inherited from Latin sē (“himself, herself, themselves”), the accusative of the Latin reflexive pronoun, in its stressed position.[2][3][4] The unstressed form of the same pronoun gave se, just as moi and toi stand beside me and te.[3][5] The Latin pronoun goes back to Proto-Indo-European *swé,[1] a root that Rey says marked a person's belonging to a group, or his being set apart from it, and that he also finds in sœur and in Ancient Greek ἔθος (éthos, “custom”) and ἔθνος (éthnos, “nation”).[3]

Cognate with Italian sé, Portuguese si and Spanish sí.[1]

Earliest recorded meaning

The pronoun is first found in the second half of the 10th century, in the Vie de saint Léger (ob se, in a Provençal spelling) and the Vie de saint Alexis (Tut sun aver qu'od sei en ad portet, “all his wealth that he took with him”), after a preposition and referring to the subject.[2]

Semantic evolution

From the earliest texts soi could be strengthened by même (sei medisme, in the Alexis).[2][3] It mostly goes with an indefinite or general subject, but it long also referred to a definite person, especially where lui would be ambiguous;[3] this use is now dated.[1]

Many phrases were formed with it.[3][6] De soi “on one's own authority” (about 1172–1174) has gone out of use.[3] Être à soi first meant “to be at liberty, in the wild” (about 1375), then “to be in full possession of one's reason” (mid-16th century) and “to be free” (1659).[3][6] En soi was used in philosophy from 1541 (Calvin) for what exists independently of the mind,[3][6] and chez soi “at home” is in Montaigne (1580), the noun un chez-soi in Furetière (1690).[6] Corneille has un autre soi-même “another self” in Horace (1640).[2]

As a noun, le soi “the self” appears in philosophy in 1700, in Pierre Coste's translation of Locke, again in Sartre's L'Être et le Néant (1943), and in psychoanalysis in 1948.[2]

Timeline

  • 2nd half of the 10th century – Se, sei in the Vie de saint Léger and the Vie de saint Alexis.[2]
  • c. 1160 – The form soi.[3]
  • 1541 – En soi in philosophy (Calvin).[6]
  • 1580 – Chez soi, in Montaigne.[6]
  • 1640 – Un autre soi-même, in Corneille.[2]
  • 1690 – The noun chez-soi (Furetière).[6]
  • 1700 – Le soi in philosophy, translating Locke.[2]
  • 1943 – Sartre's soi in L'Être et le Néant.[2]
  • 1948 – Le soi in psychoanalysis.[2]

Meanings

Pronoun

  1. Oneself: the stressed reflexive pronoun of the third person, mostly referring to an indefinite subject (on, chacun, personne): n'aimer que soi.[7][1]
  2. After a preposition: à soi, chez soi (at home), sur soi (on one's person), en soi (in itself).[7][6]
  3. (dated) Himself, herself, itself, referring to a definite subject.[1][3]

Noun

  1. (philosophy, psychoanalysis) The self.[1][2]

Word family

  • chez-soi
  • soi-disant
  • soi-même

References

  1. ^ a b c d e f g h Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m 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 Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  4. ^ a b Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
  5. ^ Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
  6. ^ a b c d e f g h Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
  7. ^ a b Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert

Related etymologies

Cite this entry

“Soi.” Etymologically, 18 Oct. 2026, etymologically.com/fr/soi. Accessed 18 Oct. 2026.

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