Etymology and origin of the Spanish word caso
- Confidence
- Established
- Formation
- Borrowing
- First attested
- 1218–1250 Fuero de Zorita de los Canes More words from the 13th century
- Borrowed from
- Latin casus
- Ultimate origin
- Proto-Indo-European *ḱh₂d-
Etymology tree
From the same root
Pronunciation
- /ˈkaso/, [ˈka.so][1]
Forms
caso m (plural casos)[1]
Etymology
It is borrowed from Latin cāsus (“fall; chance, accident; grammatical case”), a learned word.[2][3][4][1] The Latin noun is formed from cadō (“to fall, happen”), the source of caer, with the suffix -tus; the older form cāssus lost its double ⟨ss⟩ after the long vowel.[5][1] The verb goes back to Proto-Indo-European *ḱh₂d- (“to fall”).[1]
The grammatical sense of the Latin word translates Ancient Greek πτῶσις (ptôsis, “fall; grammatical case”).[1][6] The same Latin word is Portuguese caso, Galician caso, Catalan cas, Occitan cas, French cas and Italian caso.[1][7] In the 15th and 16th centuries the ⟨s⟩ of the word was voiced, /z/.[2]
Earliest recorded meaning
Corominas dated the word to Santillana at the beginning of the 15th century, but the CDH has it two centuries earlier.[2][8] In the Fuero of Zorita de los Canes (1218–c. 1250) it is a legal case or circumstance: „en aqueste caso mando que el sennor dela rayz non aya del fructo ninguna cosa” “in this case I order that the owner of the land have none of the fruit”.[8]
Semantic evolution
In Alfonso X's prose a caso is a situation or set of circumstances.[9] Juan Ruiz uses the plural for causes and lawsuits.[10] In the 15th century it also meant “event” and “chance”, as in Nebrija's casus, fortuna.[11][12]
Covarrubias in 1611 gave the jurists' caso, the case on which a law decides, and the grammarians' cases, and the phrases no hacer al caso “to be beside the point” and demos caso “let us suppose”.[13] The Autoridades added “occasion, juncture”.[14] The Academy's dictionary of 1884 has the medical sense, each individual instance of an epidemic disease.[15] The DLE now adds the notorious affair that draws public interest and the matter a police force or a court deals with.[4] In several countries of South America a caso is also a popular tale told as an example.[4][16]
Timeline
- 1218–c. 1250 – the Fuero of Zorita de los Canes, the first record without a later copy.[8]
- 1256–1300 – Alfonso X's prose uses caso for “circumstance”.[9]
- 1330–1343 – Juan Ruiz's Libro de buen amor uses the plural for lawsuits.[10]
- early 15th century – Santillana, the first record for Corominas.[2][3]
- c. 1440 – first record of acaso.[3]
- c. 1495 – Nebrija gives Latin casus, fortuna and fors.[12]
- 1611 – Covarrubias records no hacer al caso and demos caso.[13]
- 1884 – the Academy's dictionary adds the medical sense.[15]
Meanings
Noun
- An event, something that happens.[4][1]
- chance.[4]
- An occasion or circumstance: En ese caso, me quedo en casa.[4][1]
- A matter put to someone for an opinion.[4]
- (medicine) An individual instance of a disease, especially an epidemic one.[4][1]
- A notorious or criminal affair that draws public curiosity.[4]
- (law) A matter investigated by the police or tried in court.[4][1]
- (grammar) case: the category that marks syntactic relations by inflection, and the function it marks.[4][1]
- (Latin America) A popular tale, true or invented, told as an example.[4][16]
Word family
- acaso
Related words
Usage notes
Set phrases include caso fortuito “accident, act of God”, caso de conciencia “a point of conscience” and caso perdido “a hopeless case”.[4] An obsolete legal adjective caso “null, void” is a different word, from Latin cassus.[15][11]
References
- ^ a b c d e f g h i j k l Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c d Corominas, Joan; Pascual, José A. (1980–1991), Diccionario crítico etimológico castellano e hispánico, 6 vols., Madrid: Gredos, p. 1, 909
- ^ a b c Corominas, Joan (1973), Breve diccionario etimológico de la lengua castellana, 3rd ed., Madrid: Gredos, p. s.v. caso
- ^ a b c d e f g h i j k l m 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. caso
- ^ Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
- ^ Gómez de Silva, Guido (1988), Breve diccionario etimológico de la lengua española, México: Fondo de Cultura Económica / El Colegio de México, p. 158
- ^ Cunha, Antônio Geraldo da (2010), Dicionário etimológico da língua portuguesa, 4th ed., Rio de Janeiro: Lexikon, p. 748
- ^ a b c Real Academia Española (2013–), Corpus del Diccionario histórico de la lengua española (CDH), version 3.1, https://apps.rae.es/CNDHE, p. s.v. caso
- ^ a b 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. caso
- ^ a b Boggs, R. S.; Kasten, Lloyd; Keniston, Hayward; Richardson, H. B. (1946), Tentative Dictionary of Medieval Spanish, 2 vols., Chapel Hill, N.C., p. 103
- ^ a b Alonso Pedraz, Martín (1986), Diccionario medieval español: desde las Glosas Emilianenses y Silenses (s. X) hasta el siglo XV, 2 vols., Salamanca: Universidad Pontificia de Salamanca, p. 643
- ^ a b Nebrija, Antonio de (1513), Vocabulario español-latino, Salamanca, ed. Marina Vidal Díez (2007), Biblioteca Virtual Miguel de Cervantes, p. 312
- ^ a b Covarrubias Orozco, Sebastián de (1611), Tesoro de la lengua castellana o española, Madrid: Luis Sánchez (Biblioteca Wordkers transcription, CC BY 4.0), p. 454
- ^ Real Academia Española (1726–1739), Diccionario de la lengua castellana (Diccionario de Autoridades), 6 vols., Madrid: Francisco del Hierro, p. 2, 216
- ^ a b c Real Academia Española (1884), Diccionario de la lengua castellana, 12th ed., Madrid: Imprenta de D. Gregorio Hernando (the first Academy edition with etymologies), p. 223
- ^ 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. caso
Related etymologies
Cite this entry
“Caso.” Etymologically, 7 Nov. 2026, etymologically.com/es/caso. Accessed 7 Nov. 2026.
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