Etymologically

Etymology and origin of the Spanish word mostrar

Confidence
Established
Formation
Inherited
First attested
c. 950 Glosas Emilianenses More words from the 10th century
Inherited from
Latin monstro
Ultimate origin
Latin moneō
Etymology tree
inherited borrowed derived
Latin moneō
Latin mōnstrum
French monstre
Italian mostro
Latin mōnstrō
French montrer
Italian mostrare
Spanish mostrar
From the same root
Latin admoneō ← moneō
Latin commoneō ← moneō
Latin monitiō ← moneō
Latin monitor ← moneō
Latin monitum ← moneō
Latin monitus ← moneō
Latin monumentum ← moneō
Latin praemoneo ← moneō
Latin mōnstruōsus ← mōnstrum
Latin dēmōnstrō ← mōnstrō
Latin mōnstrātor ← mōnstrō
French montre ← montrer
Italian mostra ← mostrare

Pronunciation

  • /mosˈtɾaɾ/, [mosˈt̪ɾaɾ][1]

Forms

mostrar (first-person singular present muestro, first-person singular preterite mostré, past participle mostrado)[1] A variant mossar occurs in the Proverbios de Salomón, in several 16th-century playwrights and in Galician;[2][3] García de Diego gives Old Castilian mosar.[2][3] The stressed o becomes ue in some persons and tenses: muestro, muestra, muestren.[4]

Etymology

It is inherited from Latin mōnstrāre (“to show, point out; advise”).[2][5][6][1] The word is found in every period and in all the Romance languages: Portuguese mostrar, Galician mostrar, Catalan mostrar, French montrer, Italian mostrare and Romanian mustra.[2][3][1]

Corominas doubts that the vowel was close in Vulgar Latin, despite Italian mostra.[2] Latin vowels were lengthened where /ns/ stood before a vowel, but before a consonant the group may have been simplified without lengthening, as in costar;[2] Spanish has always had muestra, and mostra is the same.[2] Latin already had the archaic spelling mostro.[7]

The Latin verb is derived from mōnstrum (“portent, sign, monster”).[8][1][9] De Vaan derives the noun from *mone-stro-, a noun of moneō (“to remind, warn”), from Proto-Indo-European *mon-eie- (“to make think of, remind”), with the /n/ restored in a form that would regularly have lost it.[10] Bénaben notes that the verb lost the religious sense of the portent and kept only “to point out” and “to advise”.[9]

Earliest recorded meaning

Corominas dates it to the beginnings of the language, with the Cantar de mio Cid (c. 1140), and the BDELC gives about 1140.[2][5] DEMel cites an earlier primary record in the Glosas Emilianenses, about 950.[11] In the Cid a prayer tells how Christ walked the earth mostrando los miráculos “showing the miracles”: the sense is “to show, make visible”.[12][13]

Semantic evolution

In Old Spanish the verb also meant “to teach”, Latin docere: a 13th-century poem says Lady Luisa taught the child to greet the Virgin, mostrólo... saludar, and Cervantes still writes that people se curten y muestran a sufrir las inclemencias “harden themselves and learn to bear the weather”.[2] Berceo used it for “to show, point out”, “to confess” and “to warn, instruct”.[14] In some popular speech today the verb is in decline, replaced by enseñar in its literal sense.[2]

The Diccionario de Autoridades gives the senses “to put in view”, “to explain or prove” and “to feign, give to understand what is not so”.[4] Covarrubias in 1611 records mostrador as the hand of a clock;[15][2][5] Alonso de Palencia had used it for the index finger in 1490, and the sense of a shop counter is in Autoridades.[15][2][5] In Latin America phrases such as mostrar la hilacha (Bolivia, Chile, Argentina, Uruguay) and mostrar el cobre (Mexico, Nicaragua, Colombia) mean to let one's hidden faults show.[16]

Timeline

  • c. 950 – DEMel's first primary record, in the Glosas Emilianenses.[11]
  • c. 1140 – the Cantar de mio Cid uses mostrar; the derivative demostrar is also in the Cid.[2][5]
  • 1250–1279 – Alfonso X's Lapidario uses it for showing colours and for explaining.[17]
  • 1288 – the noun muestra is first recorded.[5][2]
  • 1490 – dedo mostrador “index finger”.[2][5]
  • c. 1495 – Nebrija renders it with Latin monstro, commonstro and demonstro.[18]
  • 1602 – the first record from the Americas, in Mexico.[19]
  • 1611 – Covarrubias derives it from Latin monstrare.[15]
  • 1884 – the Academy's dictionary gives the etymology Del lat. monstrare.[20]

Meanings

Verb

  1. (transitive) To show: to put something in view, or point it out so that it is seen: Nos mostró las fotos del viaje.[6][1]
  2. (transitive) To explain, make known, or demonstrate that something is true.[6][1]
  3. (transitive) To make a feeling, real or feigned, plain to see.[6]
  4. (transitive) To show a quality of mind by one's actions: mostrar paciencia.[6]
  5. (reflexive) To behave in a certain way, or prove oneself to be: Se mostró muy generoso.[6]

Word family

  • muestra
  • mostrador
  • demostrar
  • muestrario

References

  1. ^ a b c d e f g Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n o Corominas, Joan; Pascual, José A. (1980–1991), Diccionario crítico etimológico castellano e hispánico, 6 vols., Madrid: Gredos, p. 4, 164
  3. ^ a b c García de Diego, Vicente (1985), Diccionario etimológico español e hispánico, 2nd ed., Madrid: Espasa-Calpe (1st ed. 1954), p. s.v. monstrare
  4. ^ a b Real Academia Española (1726–1739), Diccionario de la lengua castellana (Diccionario de Autoridades), 6 vols., Madrid: Francisco del Hierro, p. 4, 617
  5. ^ a b c d e f g Corominas, Joan (1973), Breve diccionario etimológico de la lengua castellana, 3rd ed., Madrid: Gredos, p. s.v. mostrar
  6. ^ a b c d e f 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. mostrar
  7. ^ Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  8. ^ Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  9. ^ a b Bénaben, Michel (2000), Dictionnaire étymologique de l'espagnol, Paris: Ellipses, p. s.v. mostrar
  10. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  11. ^ a b Diccionario del Español Medieval electrónico (DEMel), data publication 2026 (CC BY-SA), Universität Rostock, p. s.v. mostrar
  12. ^ Real Academia Española (2013–), Corpus del Diccionario histórico de la lengua española (CDH), version 3.1, https://apps.rae.es/CNDHE, p. s.v. mostrar
  13. ^ Menéndez Pidal, Ramón (1908–1911), Cantar de Mio Cid: texto, gramática y vocabulario, 3 vols., Madrid: Bailly-Baillière, p. 358
  14. ^ Lanchetas, Rufino (1900), Gramática y vocabulario de las obras de Gonzalo de Berceo, Madrid: Sucesores de Rivadeneyra, p. 507
  15. ^ 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. 1150
  16. ^ Asociación de Academias de la Lengua Española (2010), Diccionario de americanismos, Lima: Santillana; online at https://www.asale.org/damer, p. s.v. mostrar
  17. ^ 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. mostrar
  18. ^ Nebrija, Antonio de (1513), Vocabulario español-latino, Salamanca, ed. Marina Vidal Díez (2007), Biblioteca Virtual Miguel de Cervantes, p. 383
  19. ^ 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. monstrar
  20. ^ Real Academia Española (1884), Diccionario de la lengua castellana, 12th ed., Madrid: Imprenta de D. Gregorio Hernando (the first Academy edition with etymologies), p. 721

Related etymologies

Cite this entry

“Mostrar.” Etymologically, 7 Nov. 2026, etymologically.com/es/mostrar. Accessed 7 Nov. 2026.

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