Etymologically

Etymology and origin of the Spanish word interés

Confidence
Established
Formation
Borrowing
First attested
1252–1289 Maestre Jacobo, Doctrinal, spelt jnterese More words from the 13th century
Borrowed from
Latin intersum
Ultimate origin
Latin intersum
Etymology tree
inherited borrowed derived
Latin sum
Aromanian hiu
French soit
Italian essere
Spanish ser
Latin intersum
German Interesse
Italian interesse
Spanish interés
From the same root
Latin absum ← sum
Latin adsum ← sum
Latin dēsum ← sum
Latin ēns ← sum
Latin forsit ← sum
Latin forsitan ← sum
Latin futūrus ← sum
Latin īnsum ← sum
Latin obsum ← sum
Latin possum ← sum
Latin praesum ← sum
Latin prōsum ← sum
Latin subsum ← sum
Latin supersum ← sum
German interessieren ← Interesse
Italian interessare ← interesse

Pronunciation

  • /inteˈɾes/, [ĩn̪.t̪eˈɾes][1]

Forms

interés m (plural intereses)[1] Medieval texts write interesse, interese and enteresse; the form interesse was still common in the 16th century and appears in the first part of the Quijote.[2][3] Ladino has entereso.[4]

Etymology

It is borrowed from Medieval Latin interesse (“compensation; interest on a loan”), the infinitive of the Latin verb “to be between; to matter” used as a noun.[5][6][2] The Medieval Latin noun meant damages for a broken contract and the interest on capital.[7][8] The DLE glosses the Latin verb as “to matter”.[9]

The same Medieval Latin noun gave Portuguese interesse, Italian interesse and French intérêt; the French word, recorded in 1290, comes rather from the Latin third person interest (“it matters”).[10][11][12]

The verb is formed from Latin inter- (“between”) + sum (“to be”).[13][2]

Earliest recorded meaning

The early hits of the CDH are the Latin verb in Latin charters.[14] The first in a Castilian text is a lease of 1300, where it is the compensation owed for late payment: que diese por razón de dannos e de interesse al cabildo “that he should give the chapter, by way of damages and interest”.[14] The DEMel cites the spelling jnterese in the legal treatise of Maestre Jacobo (1252–1289).[3]

Semantic evolution

In the 14th century the word belonged to the language of contracts, where it appears again and again in the formula por nombre de pena e de interesse e de postura, the penalty and compensation agreed for a broken undertaking.[14] Terreros separates the sense of whatever concerns one's estate, love or comfort from the money earned by capital.[15]

The Academy's 1843 dictionary lists profit, value, a strong inclination of the mind towards a person, object or story, the earnings of money, and in the plural one's fortune.[16] The modern dictionary keeps these senses, and adds the plural for one's moral or material advantage.[9] Set phrases of finance and law include interés compuesto “compound interest” and interés legal “legal interest”.[9][1] In the Americas the word appears from 1520, in Cuba.[17]

Timeline

  • 1252–1289 – the spelling jnterese in Maestre Jacobo's Doctrinal.[3]
  • 1300 – a lease contract uses interesse for compensation owed to a chapter.[14]
  • 1417 – the first record in DICCA-XV.[18]
  • 1438 – the first record in Corominas's dictionary.[5]
  • 1520 – the first record from the Americas, in Cuba.[17]
  • 1600 – the modern form interés in Góngora.[2]
  • 1786–1793 – Terreros distinguishes the general sense from the interest earned by capital.[15]
  • 1899 – the Academy's dictionary gives the etymology “interesse, importar”.[19]

Meanings

Noun

  1. profit, benefit, gain.[9]
  2. The value or importance of something: un edificio de gran interés.[9][20]
  3. (finance) interest, the earnings produced by capital or charged on a loan.[9][1]
  4. Attention, curiosity or inclination towards a person, thing or story: Siguió el partido con mucho interés.[9][1]
  5. An involvement or stake in an undertaking.[1]
  6. (in the plural) One's property or fortune; also one's moral or material advantage: defender sus intereses.[9]
  7. (usually in the plural) A hobby, a subject one cares about.[1]

Word family

  • interesar
  • desinterés
  • interesado
  • interesante

References

  1. ^ a b c d e f g Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d Corominas, Joan; Pascual, José A. (1980–1991), Diccionario crítico etimológico castellano e hispánico, 6 vols., Madrid: Gredos, p. 5, 213
  3. ^ a b c Diccionario del Español Medieval electrónico (DEMel), data publication 2026 (CC BY-SA), Universität Rostock, p. s.v. interés
  4. ^ Nehama, Joseph (1977), Dictionnaire du judéo-espagnol, Madrid: CSIC, p. s.v. entereso
  5. ^ a b Corominas, Joan (1973), Breve diccionario etimológico de la lengua castellana, 3rd ed., Madrid: Gredos, p. s.v. interés
  6. ^ Gómez de Silva, Guido (1988), Breve diccionario etimológico de la lengua española, México: Fondo de Cultura Económica / El Colegio de México, p. 390
  7. ^ Niermeyer, J. F. (1976), Mediae Latinitatis Lexicon Minus, Leiden: Brill, p. s.v. interesse
  8. ^ du Cange, Charles du Fresne, et al. (1883–1887), Glossarium mediae et infimae latinitatis, augmented ed. by Léopold Favre, Niort: L. Favre, p. s.v. interesse
  9. ^ a b c d e f g h 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. interés
  10. ^ Cunha, Antônio Geraldo da (2010), Dicionário etimológico da língua portuguesa, 4th ed., Rio de Janeiro: Lexikon, p. 1913
  11. ^ Nocentini, Alberto; Parenti, Alessandro (2010), l'Etimologico: vocabolario della lingua italiana, Firenze: Le Monnier, p. s.v. interesse
  12. ^ Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert, p. s.v. intérêt
  13. ^ Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press, p. s.v. intersum
  14. ^ a b c d Real Academia Española (2013–), Corpus del Diccionario histórico de la lengua española (CDH), version 3.1, https://apps.rae.es/CNDHE, p. s.v. interés
  15. ^ a b Terreros y Pando, Esteban de (1786–1793), Diccionario castellano con las voces de ciencias y artes y sus correspondientes de las tres lenguas francesa, latina e italiana, 4 vols., Madrid: Viuda de Ibarra, p. 2, 359
  16. ^ Real Academia Española (1843), Diccionario de la lengua castellana, 9th ed., Madrid: Imprenta de D. Francisco María Fernández, p. 412
  17. ^ a b 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. enterés
  18. ^ Lleal, Coloma (dir.), DICCA-XV: Diccionario del castellano del siglo XV en la Corona de Aragón, Barcelona: Universitat de Barcelona, Grup d'Estudis d'Història de la Llengua (GHCL), https://ghcl.ub.edu/diccaxv, p. s.v. interés
  19. ^ Real Academia Española (1899), Diccionario de la lengua castellana, 13th ed., Madrid: Imprenta de los Sres. Hernando y Compañía, p. 563
  20. ^ Moliner, María (2007), Diccionario de uso del español, 3rd ed., Madrid: Gredos, p. s.v. interés

Related etymologies

Cite this entry

“Interés.” Etymologically, 7 Nov. 2026, etymologically.com/es/inter%C3%A9s. Accessed 7 Nov. 2026.

Last edited on . ·