Etymologically

Etymology and origin of the French word sain

Confidence
Established
Formation
Inherited
First attested
1130–1140 Wace, Vie de sainte Marguerite More words from the 12th century
Inherited from
Latin sanus
Ultimate origin
Latin sānus
Etymology tree
inherited borrowed derived
Latin sānus
French sain
Italian sano
Spanish sano
English sane
From the same root
Latin īnsānus ← sānus
Latin sānē ← sānus
Latin sānitās ← sānus
Latin sānō ← sānus
Latin vēsānus ← sānus

Pronunciation

Forms

sain (feminine saine, masculine plural sains, feminine plural saines)[1] Old French sain, also written sein, and Anglo-Norman sayn and seyn.[2][3]

Etymology

It is inherited from Latin sānus (“healthy, in good condition, sensible, reasonable”).[2][4][5][6] Rey and the Petit Robert call the Latin adjective of unknown origin;[7][8] Wiktionary traces it to Proto-Indo-European *swā-n- (“healthy, whole”),[1] and Littré compared Ancient Greek σάος (sáos).[9]

Cognate with Italian sano, Spanish sano, Occitan san, Catalan sa and Portuguese são.[8][10]

Earliest recorded meaning

The TLFi's first record is in Wace's Vie de sainte Marguerite (1130–1140), of a body in good health and unharmed, where one manuscript also has sein e sauf “safe and sound”.[2] The Grand Robert and Rey date the word to about 1050,[6][7] and the GLLF, whose first record is the sense “cured” in the Roman d'Eneas (about 1130), notes that the adverb sainement shows the word to be older.[11][7]

Semantic evolution

In Old French the adjective was said of a person rid of an illness, cured (about 1145), and of one in good health (about 1155); of these uses only the opposition to malade and the phrase sain et sauf have stayed in common use.[2][7] Rey compares sain et sauf with Italian sano e salvo and Spanish sano y salvo.[7]

From about 1150 it was also applied to the mind and judgement: a person of sound mind, a sensible idea or opinion (about 1165).[2][7] The phrase sain de l'entendement (1552) gave way to sain d'esprit (1694), and Pascal's saine doctrine (1662) is a theological use, “in keeping with the teaching of the Church”.[7][2] The sense “just, loyal” of the 12th century has died out.[7]

By analogy it was said of fruit, plants and water (about 1155) and of objects and buildings in good condition, and of what is good for the health from about 1165, a use that runs parallel to santé.[7][2] It also meant “safe, free of danger” (about 1176), later said of a harbour or a coast.[2][7]

Timeline

  • 1130–1140 – Wace uses it of a body in good health and unharmed, with sein e sauf.[2]
  • c. 1145 – It means “cured, rid of an illness”.[2]
  • c. 1150 – The Roman de Thèbes uses it of a person of sound mind.[2]
  • c. 1160 – The Roman d'Eneas uses it of a thing that has not been damaged.[2]
  • c. 1165 – Chrétien de Troyes uses it of a sound idea or counsel, and the Roman de Troie of what is good for the health.[2]
  • c. 1176 – Chrétien's Cligès uses it for “safe, free of danger”.[2]
  • 1610 – Honoré d'Urfé writes saine raison.[2][7]
  • 1662 – Pascal writes saine doctrine.[2][7]
  • 1694 – Sain d'esprit is recorded.[2][7]
  • 1774 – Buffon uses the derivative assainir.[7][5]

Meanings

Adjective

  1. healthy, in good health, free of disease (of a person, an animal, an organ).[2][8][1]
  2. Sain et sauf: safe and sound, unharmed after a danger.[2][8]
  3. Of sound mind, mentally healthy: sain d'esprit.[2][7]
  4. wholesome, good for the health of body or mind: un air sain, une vie saine.[2][8][1]
  5. (of things) In good condition, not damaged or rotten: du bois sain.[2][11]
  6. (of ideas, judgement) sound, sensible, reasonable: une saine critique.[2][7]
  7. (of a coast, a harbour) Free of hazards, safe.[2][7]

Word family

  • assainir
  • malsain

Usage notes

The Grand Robert and the Petit Robert list a separate noun sain, recorded about 1210 and kept in hunting language for the fat of the wild boar and other animals; it is first saïm (as in saindoux), from Latin sagīna (“fat”), and is a different word from the adjective.[6][8]

References

  1. ^ a b c d e 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 x 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. ^ Anglo-Norman Dictionary (AND2), Aberystwyth University, anglo-norman.net (2nd ed., 2005–)
  4. ^ Wartburg, Walther von, et al. (1922–2002), Französisches Etymologisches Wörterbuch, 25 vols., Bonn / Leipzig / Basel: Klopp / Teubner / Zbinden, p. 11, 189a
  5. ^ a b Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
  6. ^ a b c Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
  7. ^ a b c d e f g h i j k l m n o p q Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  8. ^ a b c d e f Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert
  9. ^ Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
  10. ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter
  11. ^ a b Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse

Related etymologies

Cite this entry

“Sain.” Etymologically, 11 Nov. 2026, etymologically.com/fr/sain. Accessed 12 Nov. 2026.

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