Etymologically

Etymology and origin of the Spanish word grueso

Confidence
Established
Formation
Inherited
First attested
c. 1140 Cantar de mio Cid More words from the 12th century
Inherited from
Latin grossus
Ultimate origin
Latin grossus
Etymology tree
inherited borrowed derived
Latin grossus
French gros
Italian grosso
Spanish grueso

Pronunciation

  • /ˈɡɾweso/, [ˈɡɾwe.so][1]

Forms

grueso (feminine gruesa, masculine plural gruesos, feminine plural gruesas)[1] Old Spanish wrote gruesso, with a voiceless /s/, and also grossa in Alfonso X's Lapidario.[2][3][4]

Etymology

It is inherited from Latin grossus (“thick, bulky”), through Old Spanish gruesso.[2][5][6][1] The DLE calls the Latin word Late Latin; it is recorded from the 1st century.[6][7] The DHLF and Bénaben describe it as an altered form of classical Latin crassus (“fat, thick”).[7][8]

The same Latin word is Portuguese grosso, Galician groso, Asturian gruesu, Catalan gros, French gros, Italian grosso and Romanian gros.[9][10][1] Spanish later took some of its relatives from other languages: groso, said of tobacco, from Portuguese, and the coin gros and the silk gro from French.[2][5]

De Vaan notes that the IEW connects the Latin adjective with the Welsh word bras (“thick”), which Schrijver reconstructs differently, as Proto-Celtic *brs-t/so-.[11] Wiktionary calls the Latin word of uncertain origin, probably a slang word, often compared with the same classical adjective and with the noun meaning “unripe fig”.[1]

Earliest recorded meaning

The word is in use from the beginnings of the language: the Cantar de mio Cid (c. 1140) has cavallos gruesos “stout horses”.[2][5][12] In Alfonso X's Lapidario (1250–1279) it means “stout, corpulent”: a stone that makes a very fat man („omne muy gruesso”) grow thin.[4]

Semantic evolution

In Alfonso X's prose the word also means “heavy, dense” and, of the mind, “dull”.[4] Its sense could stretch to “coarse, rough”, as in the Rimado de Palacio, and Nebrija has gruesso de ingenio; in the Aragonese Pedro de Luna (early 15th century) it means “large”, as in Catalan and Gallo-Romance.[2] Today one says un hombre grueso but rarely un animal grueso, which is usual in the Leonese of Miranda and was in Old Portuguese.[2]

As a noun it meant the bulk of a thing in Autoridades, and by 1817 also the main part of a whole, as in el grueso del ejército.[13][14] The feminine noun gruesa “twelve dozen” dates from 1680, and its sense “main income of a prebend” from 1597.[2][5] The Academy added the thick stroke of a letter and the third dimension of a solid in 1884.[15] In Mexico, Guatemala and Honduras young people use grueso for a difficult problem or an impressive thing, and in the Dominican Republic it means “obscene”.[16][17]

Timeline

  • c. 1140 – the Cantar de mio Cid has cavallos gruesos.[5][12]
  • 1250–1279 – Alfonso X's Lapidario uses gruesso for a fat man and grossa for a thick liquid.[4]
  • 1251 – the derivative grosura “fat” is first recorded, in the Calila.[2][5]
  • 1444 – the derivative grosero is first recorded.[5]
  • 1517 – the first record from the Americas, in Santo Domingo, of mercaderes gruesos “wealthy merchants”.[18]
  • 1609 – grosor “thickness” is first recorded, in Garcilaso.[2][5]
  • 1611 – Covarrubias gives delgado as its opposite.[19]
  • 1680 – gruesa “twelve dozen” is first recorded.[2][5]
  • 1884 – the Academy gives the etymology, “Del lat. grossus”.[15]

Meanings

Adjective

  1. thick, bulky; of a person, stout, corpulent: un tronco grueso.[6][1]
  2. Larger than usual.[6]
  3. (rare) Of the mind or wit, dull, slow.[6]
  4. (obsolete) Strong, hard and heavy.[6]
  5. (Mexico, Central America, colloquial) Of a problem, difficult; of a thing, impressive.[16]

Noun

  1. thickness: el grueso de la tabla.[6][1]
  2. The main and strongest part of a whole, the bulk: el grueso de los votantes.[6][1]
  3. The thick stroke of a letter, as against the perfil.[6]
  4. (geometry) One of the three dimensions of a solid, usually the smallest.[6]

Word family

  • grosura
  • grosor
  • grosero
  • engrosar
  • gruesa

Usage notes

Moliner describes grueso as the polite word for gordo when speaking of people.[20] En grueso means “wholesale, in large quantities”, and intestino grueso is the large intestine.[6][1] The feminine noun gruesa means “gross, twelve dozen”, an abbreviation of docena gruesa.[5][6]

References

  1. ^ a b c d e f g h i Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j Corominas, Joan; Pascual, José A. (1980–1991), Diccionario crítico etimológico castellano e hispánico, 6 vols., Madrid: Gredos, p. 3, 223
  3. ^ Diccionario del Español Medieval electrónico (DEMel), data publication 2026 (CC BY-SA), Universität Rostock, p. s.v. grueso
  4. ^ a b c d Kasten, Lloyd A.; Nitti, John J.; Gago Jover, Francisco (2002–), Diccionario de la prosa castellana del Rey Alfonso X, New York: Hispanic Seminary of Medieval Studies (electronic edition 2024), p. s.v. grueso
  5. ^ a b c d e f g h i j Corominas, Joan (1973), Breve diccionario etimológico de la lengua castellana, 3rd ed., Madrid: Gredos, p. s.v. grueso
  6. ^ a b c d e f g h i j k l Real Academia Española; Asociación de Academias de la Lengua Española (2014–), Diccionario de la lengua española, 23rd ed., online version 23.8, https://dle.rae.es, p. s.v. grueso
  7. ^ a b Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert, p. s.v. gros
  8. ^ Bénaben, Michel (2000), Dictionnaire étymologique de l'espagnol, Paris: Ellipses, p. s.v. grueso
  9. ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter, p. 3881
  10. ^ García de Diego, Vicente (1985), Diccionario etimológico español e hispánico, 2nd ed., Madrid: Espasa-Calpe (1st ed. 1954), p. 3146
  11. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  12. ^ a b Cejador y Frauca, Julio (1929), Vocabulario medieval castellano, Madrid: Librería y Casa Editorial Hernando, p. s.v. grueso
  13. ^ Real Academia Española (1726–1739), Diccionario de la lengua castellana (Diccionario de Autoridades), 6 vols., Madrid: Francisco del Hierro, p. 4, 83
  14. ^ Real Academia Española (1817), Diccionario de la lengua castellana, 5th ed., Madrid: Imprenta Real, p. 452
  15. ^ a b Real Academia Española (1884), Diccionario de la lengua castellana, 12th ed., Madrid: Imprenta de D. Gregorio Hernando (the first Academy edition with etymologies), p. 543
  16. ^ a b Asociación de Academias de la Lengua Española (2010), Diccionario de americanismos, Lima: Santillana; online at https://www.asale.org/damer, p. s.v. grueso
  17. ^ Academia Dominicana de la Lengua; Instituto Guzmán Ariza de Lexicografía (2024), Diccionario del español dominicano, 2nd ed., online at https://ded.igalex.org, p. s.v. grueso
  18. ^ Boyd-Bowman, Peter (2003), Léxico hispanoamericano 1493–1993, ed. Ray Harris-Northall and John J. Nitti, New York: Hispanic Seminary of Medieval Studies, p. s.v. grueso
  19. ^ Covarrubias Orozco, Sebastián de (1611), Tesoro de la lengua castellana o española, Madrid: Luis Sánchez (Biblioteca Wordkers transcription, CC BY 4.0), p. 938
  20. ^ Moliner, María (2007), Diccionario de uso del español, 3rd ed., Madrid: Gredos, p. s.v. grueso

Related etymologies

Cite this entry

“Grueso.” Etymologically, 7 Nov. 2026, etymologically.com/es/grueso. Accessed 7 Nov. 2026.

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