Etymologically

Etymology and origin of the French word grossir

Confidence
Established
Formation
Derivation
First attested
1317 Fierabras (Vatican manuscript) More words from the 14th century
Ultimate origin
Latin grossus
Etymology tree
inherited borrowed derived
Latin grossus
French gros
French grossir
Italian grosso
Romanian gros
Spanish grueso
From the same root
Romanian îngroșa ← gros
Spanish engrosar ← grueso
Spanish grosero ← grueso

Pronunciation

  • /ɡʁo.siʁ/[1]

Forms

grossir[1]

Etymology

It is formed from French gros + -ir.[2][1][3][4] Gros is from Late Latin grossus (“thick”), a popular Late Latin word that replaced crassus.[5]

Earliest recorded meaning

The first record, in a manuscript of Fierabras dated 1317, uses it intransitively of a river that grows and swells: Veissies si Flagot et grossir et enfler.[2][6] Bloch and Wartburg date the verb to the 12th century, the Petit Robert to the end of the 12th century.[5][7]

Semantic evolution

From “to become big, to swell”, the reflexive took the sense “to become larger”, of a sum of money, in 1368.[2][6] In the mid-16th century the transitive verb came to mean “to make stronger, more intense”, as in grossir sa voix (Amyot).[2][4] Montaigne used it for “to make seem bigger, to exaggerate” (1580) and “to make bulkier” (1595).[2][4] Corneille gave it the sense “to swell the numbers of, to strengthen by joining” (1647), and applied the intransitive verb figuratively to anger (1644–45).[2] With the progress of optics it came to mean “to make appear larger” (1671), whence the adjective grossissant.[2][4]

Timeline

  • 1317 – A manuscript of Fierabras uses it of a river swelling.[2]
  • 1368 – A letter of Charles V uses the reflexive of a sum that has grown.[2][6]
  • mid-16th century – Amyot writes grossir sa voix “to deepen one's voice”.[2][8]
  • 1560 – The noun grossissement appears, as crossissement.[4]
  • 1580 – Montaigne uses it for “to exaggerate”.[2]
  • 1647 – Corneille uses it for “to swell the ranks of”.[2]
  • 1671 – Pomey records the optical sense “to magnify”.[2][9]
  • 1763 – The adjective grossissant is first recorded.[4]

Meanings

Verb

  1. (intransitive) To put on weight, to get fatter: Il a grossi de quatre kilos pendant l'hiver.[7][10][1]
  2. (intransitive) Of things, to grow bigger, to swell: Le torrent a grossi après l'orage.[7][10]
  3. (intransitive) To increase in number, size or intensity; figuratively, to grow in scope, as a rumour does.[7][2]
  4. (transitive) To make bigger or larger; to swell a number or group: grossir les rangs “to swell the ranks”.[9][1][8]
  5. (transitive) To make look bigger, to magnify: Ce pull te grossit;[9][2] Le microscope grossit les cellules.[9][2]
  6. (transitive) To exaggerate: Les journaux ont grossi l'incident.[9][2]

Word family

  • dégrossir
  • grossissant
  • grossissement
  • regrossir

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ 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
  3. ^ Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
  4. ^ a b c d e f Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  5. ^ a b Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
  6. ^ a b c Godefroy, Frédéric (1881–1902), Dictionnaire de l'ancienne langue française et de tous ses dialectes du IXe au XVe siècle, 10 vols., Paris: Vieweg / Bouillon
  7. ^ a b c d Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert
  8. ^ a b Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
  9. ^ a b c d e Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
  10. ^ a b Dictionnaire Le Robert en ligne, dictionnaire.lerobert.com (accessed 2024)

Related etymologies

Cite this entry

“Grossir.” Etymologically, 14 Nov. 2026, etymologically.com/fr/grossir. Accessed 15 Nov. 2026.

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