Etymologically

Etymology and origin of the French word gâteux

Confidence
Established
Formation
Derivation
First attested
1836 Académie supplement More words from the 19th century
Ultimate origin
Latin vastō
Etymology tree
inherited borrowed derived
Latin vāstus
French vaste
Latin vāstō
French gâter
French gâteux
Italian guastare
Spanish gastar
Derivations
From the same root
Latin vāstitās ← vāstus
Latin vāstum ← vāstus
Latin dēvāstō ← vāstō
Latin vastatio ← vāstō

Pronunciation

Forms

gâteux (feminine gâteuse, masculine plural gâteux, feminine plural gâteuses)[1]

Etymology

It is formed from French gâter + -eux, the verb being used in its medical sense “to soil oneself, pass urine and stools without control”.[2][3] The suffix is here a dialect form of -eur, used in mockery; the word began as a pejorative variant of gâteur, one who soils his sheets and clothes, in hospital slang.[2][4][5][6] Old French gaster already meant “to waste, spill (a liquid)”, and soi gaster “to soil oneself”, in the 12th century.[2][6]

The verb is from Latin vastō (“to lay waste”), its initial changed to /w/ under the influence of a Germanic stem.[4]

Earliest recorded meaning

It is first recorded as a noun in the supplement to the Académie's dictionary of 1836, for an invalid who cannot control his bladder or bowels and so soils his bedding;[2][3] Bloch and Wartburg date it to Balzac in the same year.[4] The Grand Robert, the Petit Robert and Rey give 1835, in hospital slang.[5][7][6]

Semantic evolution

By extension, from the middle of the 19th century, gâteux described a person, usually old, whose mental faculties were failing,[6][3] and by exaggeration, from 1872, it came to mean simply “idiotic”.[6][7] A further sense, someone made foolish by a strong feeling such as doting love, is dated to Courteline in 1893 by the GLLF.[3] The noun use for “a person without intelligence” is found in Zola in 1886.[8]

It gave gâtisme (1868) and gâtifier (about 1950, after bêtifier).[6]

Timeline

  • 1836 – The supplement to the Académie's dictionary records it.[2][3]
  • mid-19th century – Used of a person whose faculties are weakened by age.[6][3]
  • 1868 – The derivative gâtisme appears.[6]
  • 1872 – It is used by exaggeration for “idiotic”.[6][7]
  • 1877 – Littré's supplement records the medical sense of gâter.[2]
  • 1893 – Courteline uses it of someone besotted by a feeling.[3]

Meanings

Adjective

  1. Whose physical and mental faculties are weakened by age or, less often, by illness; senile, doddering.[7][9]
  2. (by exaggeration) Stupid, idiotic.[7][6]
  3. (familiar) Made foolish by a strong feeling, besotted: il en est gâteux.[7][9]
  4. (medicine, dated) Suffering from incontinence of urine and stools.[2][10]

Noun

  1. A senile person: un vieux gâteux.[9][7]

Word family

  • gâtisme
  • gâtifier

References

  1. ^ a b c Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g 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
  3. ^ 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
  4. ^ a b c Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
  5. ^ a b Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
  6. ^ a b c d e f g h i j Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  7. ^ a b c d e f g Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert
  8. ^ Quemada, Bernard, ed. (1959–2006), Datations et documents lexicographiques (Base historique du vocabulaire français, BHVF), Paris: Klincksieck / CNRS / Champion; ATILF
  9. ^ a b c Dictionnaire Le Robert en ligne, dictionnaire.lerobert.com (accessed 2024)
  10. ^ Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette

Related etymologies

Cite this entry

“Gâteux.” Etymologically, 15 Nov. 2026, etymologically.com/fr/g%C3%A2teux. Accessed 15 Nov. 2026.

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