Etymologically

Etymology and origin of the French word tiers

Confidence
Established
Formation
Inherited
First attested
c. 980 Passion du Christ More words from the 10th century
Inherited from
Latin tertius via Old French
Ultimate origin
Latin tertius
Etymology tree
inherited borrowed derived
Latin tertius
French tiers
Italian terzo
Romanian terțiu
Spanish tercio
From the same root
Latin sēstertius ← tertius
Latin tertiārius ← tertius

Pronunciation

Forms

tiers (feminine tierce, masculine plural tiers, feminine plural tierces)[1] Old French feminine terce (about 980), masculine terz (late 11th century), tierz (about 1160), then tiers (13th century).[2][3][4]

Etymology

It is inherited from Old French tiers, inherited from Latin tertius (“third”), from ter (“three times”), itself from trēs (“three”).[5][2][4][1][6]

Cognate with Italian terzo, Old Occitan tertz, Catalan ters and Spanish tercio.[7][8][9]

Earliest recorded meaning

It is first found at the end of the 10th century in the Passion, in the forms terz and terce, meaning “third”: al terz di “on the third day”.[5][4]

Semantic evolution

As an adjective tiers meant “third” until the early 17th century, when troisième replaced it; it survives in fixed phrases such as tierce personne (1585), tiers ordre (tierce ordene, 1326) and tiers état (1376, again from 1576), shortened to le Tiers in 1675.[9][2][5] Fièvre tierce (1342) was used until the 19th century.[2] Law added tiers opposant (1585), tiers arbitre (1694) and tierce opposition (1762).[5]

As a noun, le tiers is the third part of a whole (1172–1174), and in law a third person besides the two parties (early 12th century), hence any outsider (1246) and être en tiers (1676).[2] Le tiers et le quart “anybody at all” dates from 1399, and gave se moquer du tiers comme du quart.[2][5] In the 20th century, when the word seemed to have lost its vitality, tiers monde was coined after tiers état.[2]

Timeline

  • c. 980 – Terz and terce appear in the Passion.[5][4]
  • c. 1160 – Benoît de Sainte-Maure has the masculine tierz.[4]
  • 1172–1174 – Le tiers is used for a third part.[2]
  • 1326 – Tierce ordene “third order” of Saint Francis.[5]
  • 1342 – Fièvre tierce is recorded.[5][2]
  • 1376 – Tiers estat appears in the Modus et Ratio; it is found again from 1576.[5]
  • 1399 – Le tiers et le quart “anybody” is recorded.[2]
  • 1585 – Tierce personne and tiers opposant appear in Noël du Fail.[5]
  • Early 17th century – The adjective gives way to troisième outside fixed phrases.[9]
  • 1675 – Madame de Sévigné writes le Tiers for the third estate.[5]
  • 1959 – Tiers provisionnel appears in tax language.[2]

Meanings

Adjective

  1. (archaic) third.[10][1]
  2. Tierce personne: a third person, and so an outsider to a group or a matter.[10][5]
  3. Le tiers état: the third estate, the commons of the Ancien Régime.[2][8]
  4. Le tiers monde: the Third World.[2]

Noun

  1. A third, one of three equal parts.[1][2]
  2. A third party; any outsider, a person not involved.[5][1]
  3. En tiers: as a third person beside two others.[5][2]
  4. Le tiers et le quart: anybody, everybody.[5]

Word family

  • tiers-point

Usage notes

The feminine tierce, used as a noun since 1119, has its own senses in liturgy (the third canonical hour), music, fencing and card games.[2][9]

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 p Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  3. ^ Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
  4. ^ a b c d e Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
  5. ^ 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
  6. ^ Wartburg, Walther von, et al. (1922–2002), Französisches Etymologisches Wörterbuch, 25 vols., Bonn / Leipzig / Basel: Klopp / Teubner / Zbinden, p. 13/1, 266b
  7. ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter
  8. ^ a b Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
  9. ^ a b c d Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
  10. ^ a b Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert

Related etymologies

Cite this entry

“Tiers.” Etymologically, 11 Nov. 2026, etymologically.com/fr/tiers. Accessed 12 Nov. 2026.

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