Etymology and origin of the French word relâcher
- Confidence
- Probable
- Formation
- Derivation
- First attested
- c. 1155 Wace More words from the 12th century
- Ultimate origins
- French re-Latin *lassico
From the same root
Forms
relâcher[1] Old French relaschier (about 1155, Wace) and relachier (1269–1278, Jean de Meun); the spelling relâcher dates from the 16th century.[2][3]
Etymology
It is formed from French re- + lâcher, in Old French relaschier.[3][2][4][5] The Grand Robert and the Petit Robert instead derive it from Latin relaxō (“to loosen, release”),[6][7] and Wiktionary compares the Latin verb.[1] The simple verb comes from Late Latin laxicō (“to loosen”), from laxō.[4]
Cognate with Occitan relaxar, Spanish relajar and Italian rilassare.[8]
Earliest recorded meaning
Its first record, in the Livre des Rois (about 1170), is in the sense “to loosen, ease”: the Philistines hope that God may relascher sa main, which lies so heavy on them.[3] Wace already has relaschier about 1155 for “to give up (an undertaking)”.[2][5]
Semantic evolution
Until the classical period the verb meant “to remit (a penalty), forgive (a sin), give up (an action)”.[5][6] From the 12th century it also meant “to slacken, let up in (an effort)”, as in relâcher son attention.[5][3]
“To set (someone) free” is found in Jean de Meun's part of the Roman de la Rose (1269–1278), and in this sense relâcher pushed back the simple verb lâcher.[3][5] The concrete sense “to make less tight” was applied to bonds, and in physiology from Ambroise Paré (about 1560) on to the muscles and the bowels.[5][2] In sailing, used without an object, it means “to put into port” (1580, Montaigne).[3][5]
The reflexive se relâcher meant “to digress” in 1230 and “to rest” in the 13th century, then took on every sense of the active verb: “to become slack” (1580), “to become less strict” (1588) and “to weaken” (1633).[3][5]
Timeline
- c. 1155 – Wace uses relaschier for “to give up”.[2][5]
- c. 1170 – The Livre des Rois has it for “to loosen, ease”.[3]
- 1269–1278 – Jean de Meun uses relachier for “to set free”.[3]
- c. 1560 – Paré uses it in physiology.[2][5]
- 1580 – Montaigne uses it intransitively of a ship putting into port.[3]
- 1588 – Montaigne has se relâcher “to become less strict”.[3]
- 1647 – Descartes writes relâcher quelque chose de “to reduce something by”.[3][5]
- 1835 – The Académie records relâcher l'intestin.[2][7]
Meanings
Verb
- (transitive) To make less taut or less tight, to slacken or loosen.[7][3]
- (physiology) To relax (the muscles); to loosen (the bowels).[7][3]
- (figurative) To let (attention, discipline, effort) weaken or become less strict.[7][3]
- To release, set free (a prisoner or hostage).[7][1]
- (reflexive) se relâcher: to become slack; to grow less strict or less zealous.[7][3]
- (intransitive, nautical) To put into port, make a stop.[7][3]
Related words
References
- ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c d e f g 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 i j k l m n o p q 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 Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
- ^ a b c d e f g h i j k Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
- ^ a b Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
- ^ a b c d e f g h Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert
- ^ Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
Cite this entry
“Relâcher.” Etymologically, 11 Nov. 2026, etymologically.com/fr/rel%C3%A2cher. Accessed 12 Nov. 2026.
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