Etymology and origin of the French word traître
- Confidence
- Established
- Formation
- Inherited
- First attested
- c. 980 Passion (object case tradetur) More words from the 10th century
- Inherited from
- Latin traditor via Old French
- Ultimate origin
- Latin trāditor
Etymology tree
From the same root
Pronunciation
- /tʁɛtʁ/[1]
Forms
traître m (plural traîtres, feminine traîtresse)[1] Old French traïtre (subject case) beside traïtor, traïtur (object case), the object case first found as tradetur about 980 in the Passion.[2][3][4] The spelling traître is recorded from 1530, when it was used in all functions;[2][4][5] trahistre was still sometimes written in the 16th century.[2][4][5] Feminine traîtresse, from the late 12th century.[2][3]
Etymology
It is inherited from Old French traïtre, inherited from Latin trāditor (“one who hands over, a betrayer”), the Old French subject case (nominative) of the word.[3][2][6][1][7] The Latin noun was adapted under the influence of trahir (Old French traïr).[3][6][8] Old French also had an object case from trāditōrem, first written tradetur and later traïtor; the subject case won out because the word was so often used to address or call someone a traitor.[2][6][3] Littré notes that the Old French form presupposes a Gallo-Roman stress on the first syllable of the Latin word, and that the contraction of traïstre to the modern form was complete by the 16th century.[5]
The Latin noun is formed from the supine of trādō (“to hand over”), itself made from dō (“to give”).[2][9] Cognate with Italian traditore, Occitan traidor, Catalan traïdor, Spanish traidor, Portuguese traidor and Romanian trădător.[9][5] The learned doublet is traditeur.[9]
Earliest recorded meaning
The object case is found first, as tradetur in the Passion of about 980.[3][2] About 1100 the Chanson de Roland uses traïtre for one who betrays: Li reis Marsile i fit mult que traïtre “King Marsile acted there very much as a traitor”.[3][5]
Semantic evolution
Besides the person who betrays, the word qualified what shows treachery from the 12th century.[2] About 1360 it was first applied to a person capable of betraying.[2] The feminine traîtresse is found as an adjective about 1175 and as a noun in the 13th century.[3][2]
In classical French traître and traîtresse weakened to mean an unfaithful lover (1652, Corneille) and became terms of abuse for anyone one was angry with (1642), uses now literary or playful.[2][3] From the 16th century the adjective was applied to things more dangerous than they look, first in Ronsard in 1552,[3][9] and Littré records it of animals that bite or kick unexpectedly.[5] The phrase en traître “treacherously” dates from Corneille's Cid (1636), and pas un traître mot “not a single word” is recorded by the Académie in 1798.[3]
traîtreusement (13th century) comes from an old adjective traîtreux, out of use since the 18th century, and traîtrise (1810) is a provincial word, from Lyon.[6][10]
Timeline
- c. 980 – The object case tradetur appears in the Passion.[3][2]
- c. 1100 – Traïtre is used in the Chanson de Roland.[3][5]
- c. 1175 – The feminine traitresse is used as an adjective.[3][2]
- 1530 – The spelling traître is recorded.[2][4]
- 1552 – Ronsard uses the adjective of something more dangerous than it seems.[3][9]
- 1636 – En traître appears in Corneille's Cid.[3][4]
- 1642 – Used as a term of abuse.[2][4]
- 1798 – The Académie records le traître mot.[3]
- 1810 – Traîtrise is recorded.[6]
Meanings
Noun
- A traitor, a person who betrays someone or something.[3][9][1]
- By extension, a treacherous, two-faced person.[3]
- (dated) A scoundrel, used as an insult.[9][2]
- En traître: treacherously, by surprise, as in prendre quelqu'un en traître.[9][3]
Adjective
- Who betrays or is capable of betraying: traître à sa patrie.[9][1]
- More dangerous than it appears, said of things and animals: un chien traître.[3][9][5]
- Pas un traître mot: not a single word.[3]
Word family
- traîtreusement
- traîtrise
Related words
Usage notes
The feminine is traîtresse, both noun and adjective.[1][9]
References
- ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ 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
- ^ a b c d e f g h i j k l m n o p q r s t u v 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
- ^ a b c d e f Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
- ^ a b c d e f g h Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
- ^ a b c d e Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
- ^ Wartburg, Walther von, et al. (1922–2002), Französisches Etymologisches Wörterbuch, 25 vols., Bonn / Leipzig / Basel: Klopp / Teubner / Zbinden, p. 13/2, 152b
- ^ Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
- ^ a b c d e f g h i j k Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert
- ^ Picoche, Jacqueline (1991), Dictionnaire étymologique du français, Paris: Le Robert (Les Usuels du Robert)
Related etymologies
Cite this entry
“Traître.” Etymologically, 15 Nov. 2026, etymologically.com/fr/tra%C3%AEtre. Accessed 15 Nov. 2026.
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