Etymologically

Etymology and origin of the Portuguese word casa

Confidence
Established
Formation
Inherited
First attested
1221 More words from the 13th century
Inherited from
Latin casa
Ultimate origin
Latin casa
Etymology tree
inherited borrowed derived
Latin casa
Aromanian casã
French chez
English chez
Italian casa
Portuguese casa
Romanian casă
Spanish casa
From the same root
Aromanian acasã ← casa
Italian casale ← casa
Latin casula ← casa
Romanian căsnicie ← casa
Italian casino ← casa
Italian casupola ← casa
Romanian acasă ← casă
Romanian căsar ← casă

Pronunciation

  • Brazil: /ˈka.zɐ/[1]
  • Portugal: /ˈka.zɐ/[1]

Forms

casa f (plural casas)[1] Houaiss records quasa in 1278, caza in 1352 and cassa in the 14th century;[2][1] Wiktionary lists caza.[2][1] A short form cas is found in the cantigas.[3]

Etymology

It is inherited from Latin casa (“hut, cottage”), written Old Galician-Portuguese casa in the oldest texts.[2][4][1] In Latin the word meant a humble dwelling or hovel; the ordinary word for “house” was domus.[2][5]

The same Latin word is Galician casa, Spanish casa, Catalan casa, Italian casa and Romanian casă, and French chez (“at the house of”) continues it.[6][7][1] Spanish has a reduced form in the phrase en cas de (“at the house of”).[8]

The origin of the Latin word is uncertain.[9][1] An older view derives it from *kat- (“to plait”); de Vaan finds a link with European words for “hut” from *ket- or *kot- also possible, but because of the Latin /a/ and the single /s/ after a short vowel he thinks it more likely a loanword.[9][1]

Earliest recorded meaning

Latin charters already have the word in its Romance sense: casas in 870 and kasa in 906, Lorenzo notes.[10] Houaiss dates the Portuguese word to 1221, from Cunha's index of medieval Portuguese.[2] The Cantigas de Santa Maria use it for a dwelling (levó-o a ssa casa “took him to his house”) and also for a room (hũa casa escura “a dark room”).[10]

Semantic evolution

In the Middle Ages the plural casas was often used for one building, as in Spanish;[8] Corominas cites a 13th-century Galician-Portuguese line, aquelas casas u mia senhor vi “that house where I saw my lady”.[8] Barbosa (1611) has the phrases casa d'esgrima “fencing school”, casa de relação “high court” and casa de mancebia “brothel”.[11] Folqman (1755) has casa de botão “buttonhole” and casa “family, lineage”.[12]

In Portugal the word also means a room of a dwelling (casa de banho “bathroom”, casa de jantar “dining room”).[2] Other senses are a commercial firm, a public office (Casa da Moeda “the Mint”), a square of a chessboard, a decimal place, and a decade of age (na casa dos trinta “in one's thirties”).[2][1]

The word passed into the creoles: kasa in Kabuverdianu and Guinea-Bissau Creole, kaza in Kristang and ka in Papiamentu.[1]

Timeline

  • 870 – casas in a Latin charter.[10]
  • 1221 – first record of the Portuguese word.[2]
  • 1278 – the spelling quasa.[2]
  • 1352 – the spelling caza.[2]
  • c. 1400 – a fragment of a Flos Sanctorum (witness 1380–1425), the first CTA text with the word.[13]
  • 1611 – Barbosa lists casa d'esgrima, casa de relação and casa de mancebia.[11]
  • 1755 – Folqman lists casa de botão “buttonhole”.[12]

Meanings

Noun

  1. A house, a building for people to live in.[2][1][14]
  2. (Portugal) A room of a dwelling: casa de banho.[2][14]
  3. home, one's own dwelling: Ela já voltou para casa.[1][15]
  4. The household or family; a noble or royal dynasty: a Casa de Bragança.[2][1]
  5. The goods and affairs of a household.[2]
  6. A commercial firm or shop; a public office.[2][1][15]
  7. A compartment of a box or shelf; a square of a chessboard or of a printed form.[2][1]
  8. A buttonhole.[2][16]
  9. A decimal place; a decade of age: na casa dos quarenta.[2][1]
  10. The audience at a show: casa cheia.[2]
  11. (church) A convent or monastery.[2]

Word family

  • casinha
  • casarão
  • casebre
  • caseiro
  • casario
  • casar
  • casamento
  • casado
  • casamenteiro
  • casadouro

Usage notes

Wiktionary lists many compounds, such as casa de câmbio “bureau de change”, casa de campo “country house” and casa de saúde “private hospital”.[1] Schlee records the gaúcho phrase ser de casa “to be one of the family, stand on no ceremony”.[17]

References

  1. ^ a b c d e f g h i j k l m n o p q r 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 r s t Houaiss, Antônio; Villar, Mauro de Salles (2001), Dicionário Houaiss da língua portuguesa, Rio de Janeiro: Objetiva, p. s.v. casa
  3. ^ Universo Cantigas: Glosario da poesía medieval profana galego-portuguesa, A Coruña: Instituto da Lingua e Literatura (ILLA), Universidade da Coruña, https://www.universocantigas.gal, p. s.v. casa
  4. ^ Cunha, Antônio Geraldo da (2010), Dicionário etimológico da língua portuguesa, 4th ed., Rio de Janeiro: Lexikon, p. s.v. casa
  5. ^ Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  6. ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter
  7. ^ Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert, p. s.v. chez
  8. ^ a b c Corominas, Joan; Pascual, José A. (1980–1991), Diccionario crítico etimológico castellano e hispánico, 6 vols., Madrid: Gredos, p. 1, 901
  9. ^ a b de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  10. ^ a b c Instituto da Lingua Galega, Dicionario de dicionarios do galego medieval (DDGM), ed. Ernesto González Seoane, Santiago de Compostela: Universidade de Santiago de Compostela, https://ilg.usc.gal/ddgm, p. s.v. casa
  11. ^ a b Barbosa, Agostinho (1611), Dictionarium lusitanicolatinum, Braga: Fructuoso Lourenço de Basto (CLP transcription, Universidade de Aveiro), p. s.v. casa
  12. ^ a b Folqman, Carlos (1755), Diccionario portuguez, e latino, Lisboa: Régia Officina Silviana (CLP transcription, Universidade de Aveiro), p. s.v. casa
  13. ^ Centro de Linguística da Universidade de Lisboa, CTA – Corpus de Textos Antigos, https://teitok.clul.ul.pt/cta, p. s.v. casa
  14. ^ a b Dicionário Priberam da Língua Portuguesa, Lisboa: Priberam Informática, https://dicionario.priberam.org, p. s.v. casa
  15. ^ a b Porto Editora (2013), Grande Dicionário da Língua Portuguesa, Porto: Porto Editora, p. 1855
  16. ^ Michaelis: Moderno Dicionário da Língua Portuguesa, São Paulo: Melhoramentos (online as Michaelis Dicionário Brasileiro da Língua Portuguesa, https://michaelis.uol.com.br), p. s.v. casa
  17. ^ Schlee, Aldyr Garcia (2019), Dicionário da Cultura Pampeana Sul-Rio-Grandense, 2 vols., Pelotas: Fructos do Paiz, p. s.v. casa

Related etymologies

Cite this entry

“Casa.” Etymologically, 15 Nov. 2026, etymologically.com/pt/casa. Accessed 16 Nov. 2026.

Last edited on . ·