Etymology and origin of the Spanish word muy
- Confidence
- Established
- Formation
- Inherited
- First attested
- c. 1140 Cantar de mio Cid More words from the 12th century
- Inherited from
- Latin multum via Old Spanish
- Ultimate origin
- Latin multus
Etymology tree
From the same root
Forms
muy[1] Old Spanish wrote muy, mui, muyt and muit.[2][3] Popular speech reduces it to mu, and Andalusian has mi.[4][1][5]
Etymology
It continues inherited from Old Spanish muito (“much”), shortened before adjectives and adverbs; the Old Spanish word is inherited from Latin multum (“much”), the adverbial neuter of multus (“much, many”).[6][1][7] The DCECH explains that the Old Spanish word, common to Portuguese and early Castilian, lost its final vowel when it was used proclitically; before a consonant the cluster then no longer developed into the palatal of mucho, as happened in buitre from Latin vultur, and so muit before a consonant was soon reduced to the present form.[3] Before a vowel the 13th century used much, and for a long time speakers used the full form for the short one and the other way round.[3] The cases where the word seems to count as two syllables in Berceo and other early poets are, in Corominas's view, places where 14th-century scribes put the short form in place of the original full one.[3]
Portuguese muito, Catalan molt and the proclitic Asturian mi have the same source.[8]
Earliest recorded meaning
The Cantar de mio Cid (c. 1140, in a 14th-century copy) already has it before an adjective: sobr'ella una sávana de rançal e muy blanca “on it a sheet of fine linen, and very white”.[9] The first record in a text without a later copy is the Cortes de León of 1208, where the king calls himself muy nobre Rey de Leon “most noble King of León”.[9]
Semantic evolution
Old forms like mucho huerte were still used in the late 15th century, and muy mejor “much better” survived longer, into Juan de Valdés.[3] The Academy's 1817 dictionary notes that in formal titles muy ilustre ranks below ilustrísimo, that muy señor mío opens letters, and that with a negation (no es muy prudente) it means “not very”, close to the opposite.[10] Its 1884 edition defined it as the apocope of mucho used before adjectives, participles, adverbs and nouns used as adjectives (muy hombre).[11]
Moliner notes that it is not used with the comparatives (mucho mayor), and that with the article and a word of reproach it forms exclamations (¡el muy bandido!).[4] In Argentina and Uruguay it can stand alone in a reply, for a quality just mentioned.[6]
Timeline
- c. 1140 – muy blanca in the Cantar de mio Cid.[9]
- 1208 – muy nobre Rey de Leon in the Cortes de León.[9]
- 13th century – much before a vowel (much alto) beside muy before a consonant.[3]
- 14th century – copyists replace mucho with muy before adjectives.[3]
- 1492 – Nebrija renders several Latin adverbs with mui mucho.[12]
- 1817 – the Academy's dictionary records muy ilustre and muy señor mío.[10]
- 1884 – the Academy calls it the apocope of mucho.[11]
Meanings
Adverb
- very: before adjectives, adverbs and some prepositional phrases, a high degree of the quality: Este café está muy caliente.[6][1]
- (Argentina, Uruguay) Alone, for a high degree of a quality just mentioned: —¿Es cara la entrada? —Muy.[6]
- With the article, before a word of reproach or ironic praise, in exclamations: ¡El muy tramposo![4]
Related words
Usage notes
It is not used before comparatives, which take mucho (mucho mejor).[4] In Mexico, Nicaragua, Peru, Bolivia and Paraguay muy muy describes someone who acts as if above the others, and ni muy muy ni tan tan means “just right, without excess” in many countries.[13]
References
- ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ Diccionario del Español Medieval electrónico (DEMel), data publication 2026 (CC BY-SA), Universität Rostock, p. s.v. muy
- ^ a b c d e f g Corominas, Joan; Pascual, José A. (1980–1991), Diccionario crítico etimológico castellano e hispánico, 6 vols., Madrid: Gredos, p. 4, 178
- ^ a b c d Moliner, María (2007), Diccionario de uso del español, 3rd ed., Madrid: Gredos, p. s.v. muy
- ^ Alcalá Venceslada, Antonio (1951), Vocabulario andaluz, Madrid: Real Academia Española, p. 401
- ^ a b c d 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. muy
- ^ Corominas, Joan (1973), Breve diccionario etimológico de la lengua castellana, 3rd ed., Madrid: Gredos, p. s.v. mucho
- ^ García de Diego, Vicente (1985), Diccionario etimológico español e hispánico, 2nd ed., Madrid: Espasa-Calpe (1st ed. 1954), p. s.v. muy
- ^ 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. muy
- ^ a b Real Academia Española (1817), Diccionario de la lengua castellana, 5th ed., Madrid: Imprenta Real, p. 592
- ^ a b Real Academia Española (1884), Diccionario de la lengua castellana, 12th ed., Madrid: Imprenta de D. Gregorio Hernando (the first Academy edition with etymologies), p. 729
- ^ 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. muy
- ^ Asociación de Academias de la Lengua Española (2010), Diccionario de americanismos, Lima: Santillana; online at https://www.asale.org/damer, p. s.v. muy
Related etymologies
Cite this entry
“Muy.” Etymologically, 7 Nov. 2026, etymologically.com/es/muy. Accessed 7 Nov. 2026.
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