- Confidence
- Established
- Formation
- Inherited
- First attested
- 10th century, Passion de Clermont
- Inherited from
- Latin *exclario via Old French
- Ultimate origin
- Latin (clarus)
Pronunciation
Forms
éclairer[1] Old French esclairer, éclairer from the 17th century.[2]
Etymology
It is inherited from Old French esclairer, inherited from Vulgar Latin *exclāriō, from Latin exclārō (“to light up”),[3][4][2][1][5] formed with ex- and clārō (“to make bright”), from clārus (“clear, bright”), the source of clair.[6][4] Rey relates the adjective to the root of clāmō (“to cry out”).[6]
Compare Old Occitan esclairar and Italian schiarare.[7][8]
Earliest recorded meaning
It is first found as a participle in the Passion of Clermont (10th century): Cum le matins fud esclairez, “when the morning had dawned”.[3][6] The Chanson de Roland uses it intransitively: Tuz li païs en reluist e esclairet (“the whole country shines and is lit up”).[3][8]
Semantic evolution
The transitive sense “to shed light on” someone is found about 1200 (L'Escoufle), and on a room in the 13th century.[3][6] Very early it took the figurative sense “to make clear, explain” (Gautier de Coinci, about 1220), whence “to enable someone to understand” (1580, Montaigne).[3][6][2] The participle éclairé “enlightened” is in Molière (1667), and the 18th century spoke of despotisme éclairé.[3][6]
From the 16th century it also meant “to pay”, in gamblers' slang éclairer le tapis (1771), from the shine of coins on the table; in the 18th-century low-life theatre it meant “to bribe”.[6] In the Revolution it was a euphemism for “to set fire to” (1790).[6] In the army (1834) it means to scout ahead, as with éclaireurs “scouts” (1793).[3][6][7] éclair “flash of light, lightning” dates from about 1121.[6]
Timeline
- 10th century – Esclairez in the Passion.[3]
- c. 1100 – Esclairet, in the Chanson de Roland.[3]
- c. 1121 – Éclair.[6]
- c. 1200 – “To shed light on someone”.[3]
- c. 1220 – “To explain”, in Gautier de Coinci.[3]
- 1667 – Éclairé “enlightened”, in Molière.[3]
- 1771 – Gamblers' éclairer le tapis.[6]
- 1790 – Revolutionary “to set on fire”.[6]
- 1793 – Éclaireur.[7]
- 1798 – Éclairage.[7]
Meanings
Verb
- To Light (up), illuminate: les lampes qui éclairent la pièce, s'éclairer, to light one's way.[9][1]
- To light the way for (someone).[9]
- (figurative) To shed light on, explain; to enlighten (someone).[1][6]
- Of a face, to light up.[6]
- (military) To scout ahead of (a troop).[1][3]
- (gambling slang) To put up one's stake, to pay.[6]
- (regional, impersonal) To flash with lightning.[6]
Word family
- éclair
- éclairage
- éclairant
- éclairement
- éclaire
- éclaireur
Related words
- clair
- clarté
References
- ^ a b c d e f g Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c 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 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 Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
- ^ Wartburg, Walther von, et al. (1922–2002), Französisches Etymologisches Wörterbuch, 25 vols., Bonn / Leipzig / Basel: Klopp / Teubner / Zbinden, p. 3, 274b
- ^ 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 Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
- ^ a b Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
- ^ a b Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert
Related etymologies
Cite this entry
“Éclairer.” Etymologically, 18 Oct. 2026, etymologically.com/fr/%C3%A9clairer. Accessed 18 Oct. 2026.
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