Etymologically

confidentiel

Etymology and origin of the French word confidentiel

Confidence
Established
Formation
Derivation
First attested
1775 letter of Vergennes to Ossun More words from the 18th century
Ultimate origin
Latin cōnfīdentia
Etymology tree
inherited borrowed derived
Latin fīdō
Latin cōnfīdō
English confide
French confier
Latin cōnfīdēns
English confidence
French confiance
French confidentiel
Romanian confidențial
From the same root
Latin diffīdō ← fīdō
Latin fīdāmen ← fīdō
Latin fīdēns ← fīdō
Latin fīdūcia ← fīdō
French confident ← cōnfīdēns
Latin cōnfīdenter ← cōnfīdēns
English confidentiality ← cōnfīdentia
English con ← confidence
English confidential ← confidence

Pronunciation

  • /kɔ̃.fi.dɑ̃.sjɛl/[1]

Forms

confidentiel (feminine confidentielle, masculine plural confidentiels, feminine plural confidentielles)[1]

Etymology

It is formed from French confidence + -iel.[2][3][4][5] Wiktionary instead derives it from confident with the same suffix.[1] The base noun is from Latin cōnfīdentia.[5]

In form it recalls Medieval Latin confidentialis (“bold, self-assured”), recorded about 1318, but the French word was made on the French noun.[2][4]

Earliest recorded meaning

It is first recorded in 1775, in a letter of the minister Vergennes to Ossun, of something told in confidence.[2][6]

Semantic evolution

Unlike confidence and confident, which stayed literary words about private feelings, confidentiel became an administrative term, a milder equivalent of secret.[4] An official note marked confidentiel is one passed only to certain officials.[6]

From the sense “kept to a few people” it came to describe whatever reaches only a small circle, such as a review or a work with few readers.[2][7] The adverb confidentiellement is as old as the adjective (1775), and the noun confidentialité (1970) is a calque of English confidentiality.[4]

Timeline

  • 1775 – Vergennes uses confidentiel in a letter to Ossun.[2][6]
  • 1775 – The adverb confidentiellement appears.[4]
  • 1970 – Confidentialité is formed after English confidentiality.[4]

Meanings

Adjective

  1. Confidential, said or done in secret: un rapport confidentiel, à titre confidentiel.[7][2]
  2. Reaching or meant for only a small circle of people: un tirage confidentiel.[7][2]
  3. Having the character of a confidence, revealing one's private self.[6]

Word family

  • confidentiellement
  • confidentialité

References

  1. ^ a b c Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g 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. ^ Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
  4. ^ a b c d e f Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  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 d Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
  7. ^ a b c Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert

Related etymologies

Cite this entry

“Confidentiel.” Etymologically, 14 Nov. 2026, etymologically.com/fr/confidentiel. Accessed 15 Nov. 2026.

Last edited on . ·