Etymology and origin of the French word crasse
- Confidence
- Established
- Formation
- Inherited
- First attested
- 1176–1187 Cantique des Cantiques More words from the 12th century
- Inherited from
- Latin crassus via Old French
- Ultimate origin
- Latin crassus
From the same root
Pronunciation
- /kʁas/[1]
Forms
crasse f (feminine only, feminine plural crasses)[1] The masculine of the Old French adjective was cras, which lasted until the 17th century.[2][3]
Etymology
It is inherited from Old French crasse, the feminine form of the Old French adjective cras, inherited from Latin crassus (“thick, fat, coarse”).[4][5][1] The noun is the adjective used as a substantive.[4][2] Bloch and Wartburg instead treat the word as borrowed from the feminine of the Latin adjective.[6] Rey describes the Latin word as expressive in origin, the opposite of liquidus, tenuis and macer.[2]
It is a doublet of gras, from the same Latin adjective.[1][3]
Earliest recorded meaning
The adjective is first recorded in 1176–1187 in a version of the Song of Songs, meaning “plump, well fed”.[4] The noun is dated about 1327 by Bloch and Wartburg; the TLFi's first quotation, from a 15th-century medical text of Namur, has le crasse de sons “the coarsest part of the bran”.[4][6]
Semantic evolution
As an adjective, cras, crasse “thick, dense, fat” lasted until the 17th century, mostly in the feminine and especially in medicine, where humeurs crasses were thick bodily humours.[2][4] From the 13th century it also meant “base, filthy”.[4] Today it survives mainly in ignorance crasse, recorded from the 14th century according to Bloch and Wartburg and in Du Bellay in 1549, a calque of Saint Jerome's crassa rusticitas.[4][6][2]
The noun first meant the coarsest part of something and was narrowed to a layer of dirt.[2] Its figurative senses, “lack of refinement” (Cotgrave, 1611) and “sordid avarice” (Boileau, 1666), have gone out of use.[4][2] With an article, une crasse is technically the dross of a molten metal (1611).[4][2] The familiar faire des crasses à quelqu'un “to play dirty tricks on someone” is found in a letter of Flaubert of 1853;[4][7] the Petit Robert dates it to 1843, with a sense “lack of politeness” from 1826.[8]
The English adjective crass was taken from French in the 1540s.[9]
Timeline
- 1176–1187 – The adjective crasse “plump, well fed” is recorded.[4]
- 13th century – Hystore Job uses it for “base, filthy”.[4][10]
- c. 1327 – The noun is recorded, according to Bloch and Wartburg.[6]
- 15th century – Le crasse de sons “the coarsest part of the bran” in a Namur medical text.[4]
- 1540s – English borrows the adjective as crass.[9]
- 1546 – Charles Estienne writes of the crasse (thick) membrane of the brain.[4]
- 1549 – Du Bellay writes ignorance crasse.[4]
- 1611 – Cotgrave records the senses “dross of metal” and “boorishness”.[4]
- 1666 – Boileau uses it for “sordid avarice”.[4]
- 1853 – Flaubert writes faire des crasses “to play dirty tricks”.[4]
Meanings
Adjective
- (feminine only; history of medicine) Thick and viscous: humeur crasse.[8][4]
- (figurative) Gross, inexcusable, crass, chiefly in ignorance crasse.[8][4]
- (of humour) Dirty, filthy.[1]
Noun
- A layer of dirt that forms on the skin, on linen or on objects: ses mains étaient noires de crasse.[8][4]
- (technical) dross or slag of a molten metal.[8][4]
- (familiar) A dirty trick: faire une crasse à quelqu'un.[8][1]
Word family
- crasser
- crasseux
- crassier
- décrasser
- encrasser
Related words
References
- ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c d e f g h Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
- ^ a b Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
- ^ 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
- ^ Wartburg, Walther von, et al. (1922–2002), Französisches Etymologisches Wörterbuch, 25 vols., Bonn / Leipzig / Basel: Klopp / Teubner / Zbinden, p. 2, 1280a
- ^ a b c d Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
- ^ Quemada, Bernard, ed. (1959–2006), Datations et documents lexicographiques (Base historique du vocabulaire français, BHVF), Paris: Klincksieck / CNRS / Champion; ATILF
- ^ a b c d e f Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert
- ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
- ^ Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
Related etymologies
Cite this entry
“Crasse.” Etymologically, 14 Nov. 2026, etymologically.com/fr/crasse. Accessed 15 Nov. 2026.
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