Etymologically

curieux

Etymology and origin of the French word curieux

Confidence
Established
Formation
Borrowing
First attested
first half of the 12th century, Oxford Psalter (curius)
Borrowed from
Latin curiosus
Ultimate origin
Latin (cūra)
Etymology tree
inherited borrowed derived
Latin curiosus
French curieux

Pronunciation

  • IPA: /ky.ʁjø/[1]

Forms

curieux (feminine curieuse, masculine plural curieux, feminine plural curieuses)[1] Old French curius (about 1120); feminine curieuse.[2][1]

Etymology

It is borrowed from Latin cūriōsus (“careful; eager to know; prying”),[3][2][4][5][6][1] derived through a spoken form *cūrius from cūra (“care, concern”) (see cure), which could not directly have given this form.[2] The Latin adjective, literally “taking care”, came to mean “eager to know, inquisitive”, and in imperial Latin it was used as a noun for a spy.[2]

Compare Old Occitan curios, Spanish curioso and Italian curioso.[7]

Earliest recorded meaning

The Oxford Psalter (first half of the 12th century) has curius de “caring for, attentive to”; the Chanson de Roland already has li Franceis dolent et curius, “the French grieving and anxious”.[3][7][8]

Semantic evolution

Until the 17th century the sense followed that of Latin cura: a person who takes care over something, whence the classical un soin curieux.[2][4] From 1538 (Robert Estienne) it describes a person eager to see and know, and with curiosité it took on a negative moral value that the moralists of the 17th century stressed: as a noun (Amyot, 1594) it is close to “indiscreet”.[3][2] The collector of rare objects (Nicot, 1606; noun 1662) suffered the same disapproval.[3][2]

Only in the 18th century did it gain a favourable value, disinterested inquiry; today both coexist.[2] The passive sense “worth attention, odd, strange” (Amyot, 1559) is shown by putting the adjective first, un curieux personnage, except in bête curieuse (Rousseau, 1755).[3][2] In 19th-century slang le curieux was the police commissioner (1828) or the examining magistrate.[2][3]

Timeline

  • First half of the 12th century – Curius de “caring for”.[3]
  • 1155 – Curius de “eager for”, Wace.[3]
  • 1538 – “Eager to know”, Robert Estienne.[3]
  • 1559 – “Odd, remarkable”, Amyot.[3]
  • 1594 – Noun “busybody”, Amyot.[3]
  • 1606 – A collector of rarities, Nicot.[3]
  • 1755 – Bête curieuse, Rousseau.[3]
  • 1828 – Slang “examining magistrate”, Vidocq.[3]

Meanings

Adjective

  1. curious, eager to know: curieux d'apprendre, je serais curieux de savoir.[9][1]
  2. Inquisitive, prying, nosy.[9][2]
  3. (before the noun or impersonal) Odd, strange, peculiar: un curieux personnage.[2][1]
  4. (classical) Careful, attentive.[9][8]

Noun

  1. An onlooker, a bystander, rubbernecker.[1][9]
  2. (dated) A collector of curios, (old slang) an examining magistrate.[3][2]

Word family

  • curieusement
  • curiosité
  • cure

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 Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  3. ^ 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
  4. ^ a b Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
  5. ^ Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
  6. ^ Wartburg, Walther von, et al. (1922–2002), Französisches Etymologisches Wörterbuch, 25 vols., Bonn / Leipzig / Basel: Klopp / Teubner / Zbinden, p. 2, 1564b
  7. ^ a b Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
  8. ^ a b Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
  9. ^ a b c d Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert

Related etymologies

Cite this entry

“Curieux.” Etymologically, 18 Oct. 2026, etymologically.com/fr/curieux. Accessed 18 Oct. 2026.

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