Etymologically

Etymology and origin of the Spanish word mejorar

Confidence
Probable
Formation
Inherited
First attested
1107 More words from the 12th century
Inherited from
Latin melioro
Ultimate origin
Latin melior
Etymology tree
inherited borrowed derived
Latin melior
French meilleur
Italian migliore
Spanish mejor
Latin meliōrō
Italian migliorare
Spanish mejorar

Pronunciation

  • /mexoˈɾaɾ/, [me.xoˈɾaɾ][1]

Forms

mejorar (first-person singular present mejoro, first-person singular preterite mejoré, past participle mejorado)[1] Old Spanish wrote meiorar, and 16th-century texts from the Americas mexorar.[2][3]

Etymology

It is inherited from Late Latin meliōrō (“to make better”), a verb formed from melior (“better”).[4][1][5] Corominas and Gómez de Silva instead treat it as a Spanish derivative of mejor with the verb ending -ar, and Wiktionary notes the same analysis.[6][7][8][1]

The Latin verb continues in Portuguese melhorar, Galician mellorar, Catalan millorar, Occitan melhorar and Italian migliorare.[1][9][5] French améliorer was remade in 1507 after the Latin comparative from Old French ameillorer.[10] Spanish medrar “to thrive”, used by Berceo, is according to Corominas a reduced form of this verb through a stage *mejdrar; the REW places it directly under the Latin verb.[6][9]

De Vaan reconstructs the Latin comparative as *mel-iōs but calls the etymology weak, since the Greek cognate he cites, Ancient Greek μάλα (mála, “very”), shows no trace of an e-grade.[11]

Earliest recorded meaning

The BDELC dates the verb to 1107.[7] In the Cantar de mio Cid (c. 1140, in a 14th-century copy) the hero's men rejoice: ya mejoraremos posadas a dueños e a cavallos “now we shall find better lodgings for masters and horses”.[12][6]

Semantic evolution

In the prose of Alfonso X and his school the verb already meant to make something better, to get well, and to make good a wrong: the count asks the king of Navarre quel meiorasse los tuertos “to make amends for the wrongs”.[13] In legal use it meant giving an heir more: Covarrubias in 1611 explains mejorar en el testamento as leaving one child a larger share, within what the law allows.[14] The modern dictionary adds the bidder who raises the price at an auction and the weather that improves.[4]

Timeline

  • 1107 – first record according to the BDELC.[7]
  • c. 1140 – mejoraremos posadas in the Cantar de mio Cid.[12]
  • 1236 – a deed of sale in Centollinos promises land dupplada e meiorada “doubled and improved”.[12]
  • 1250–1279 – the Lapidario of Alfonso X uses the verb for recovering from illness.[13]
  • 1370 – first record of the noun mejora.[7]
  • c. 1495 – Nebrija gives melioresco for “to improve each day”.[15]
  • 1567 – first record from the Americas, in Mexico: hasta que los negocios se mexoren “until business improves”.[3]
  • 1611 – Covarrubias explains the testamentary sense.[14]

Meanings

Verb

  1. (transitive) To improve, to make something better: Han mejorado mucho el servicio de trenes.[4][1]
  2. (transitive) To make someone better, to restore their health.[4]
  3. (transitive) Of a bidder: to raise the price offered at a sale or auction.[4]
  4. (transitive, law) To leave an heir a larger share in a will.[4][14]
  5. (intransitive, also reflexive) To recover, to get well: El enfermo se mejoró en pocos días.[4][1]
  6. (intransitive, also reflexive) Of the weather: to become milder or more favourable.[4]
  7. (intransitive, also reflexive) To move to a better position or rank than before.[4]

Word family

  • medrar
  • mejora
  • mejoramiento
  • mejorable
  • desmejorar

References

  1. ^ a b c d e f g Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ Diccionario del Español Medieval electrónico (DEMel), data publication 2026 (CC BY-SA), Universität Rostock
  3. ^ 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
  4. ^ a b c d e f g h i 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. mejorar
  5. ^ a b García de Diego, Vicente (1985), Diccionario etimológico español e hispánico, 2nd ed., Madrid: Espasa-Calpe (1st ed. 1954)
  6. ^ a b c Corominas, Joan; Pascual, José A. (1980–1991), Diccionario crítico etimológico castellano e hispánico, 6 vols., Madrid: Gredos, p. 4, 11
  7. ^ a b c d Corominas, Joan (1973), Breve diccionario etimológico de la lengua castellana, 3rd ed., Madrid: Gredos, p. s.v. mejor
  8. ^ Gómez de Silva, Guido (1988), Breve diccionario etimológico de la lengua española, México: Fondo de Cultura Económica / El Colegio de México
  9. ^ a b Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter
  10. ^ Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  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 c Real Academia Española (2013–), Corpus del Diccionario histórico de la lengua española (CDH), version 3.1, https://apps.rae.es/CNDHE
  13. ^ 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)
  14. ^ a b c Covarrubias Orozco, Sebastián de (1611), Tesoro de la lengua castellana o española, Madrid: Luis Sánchez (Biblioteca Wordkers transcription, CC BY 4.0), p. 1126
  15. ^ 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

Related etymologies

Cite this entry

“Mejorar.” Etymologically, 14 Nov. 2026, etymologically.com/es/mejorar. Accessed 14 Nov. 2026.

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