Etymologically

Etymology and origin of the Spanish word solo

Confidence
Established
Formation
Inherited
First attested
1040 a charter in Oelschläger's list More words from the 11th century
Inherited from
Latin solus
Ultimate origin
Latin sōlus
Etymology tree
inherited borrowed derived
Latin sōlus
French seul
Italian solo
English solo
Spanish solo
From the same root
Latin dēsōlō ← sōlus
Latin sōlitās ← sōlus
Latin sōlitūdō ← sōlus
Latin sōlō ← sōlus
Latin sōlum ← sōlus
French seulement ← seul
English soloist ← solo
Italian solamente ← solo
Italian soltanto ← solo

Pronunciation

  • /ˈsolo/, [ˈso.lo][1]

Forms

solo (feminine sola, masculine plural solos, feminine plural solas)[1]

Etymology

It is inherited from Latin sōlus (“alone, only”); Old Spanish solo is recorded in a charter of 1040, and the word has been in general use ever since.[2][3][4][1] The adverb, “only”, is the same word: Corominas notes it from Berceo (1220–1250), and Wiktionary derives it from the Latin neuter sōlum (“only”) used as an adverb.[2][3][1] In Old French, Old Italian, Old Occitan and Old Spanish the word was used adverbially without inflection.[5]

The same Latin word is Portuguese só, Asturian solu, Catalan sol, Occitan sol, French seul and Italian solo.[5][6][7] Catalan also has the adverb sols “only”.[5][6]

The origin of the Latin word is uncertain.[8][1] The traditional explanation, from a reflexive *swé with a suffix, meaning “by oneself”, is rejected by de Vaan; he suggests a link with the root of salvus (“safe, whole”) and sollus (“whole”), *solh₂- “whole”, either as a lengthened-grade derivative or as a root noun meaning “the whole, the one”.[8][1]

Earliest recorded meaning

After the charter of 1040, the Cantar de mio Cid (c. 1140, in a 14th-century copy) has the sense “alone, without company”: „Todos eran idos, ellos quatro solos son” “all had gone; the four of them are alone”.[2][9] It also uses it for “only, no more than”: the Cid leaves „dos peones solos por la puerta guardar” “just two foot soldiers to guard the gate”.[9]

Semantic evolution

The adverbial use “only” is found from Berceo on; with a negation Old Spanish used the short form sol: sol non “not even” in the Libro de Alexandre and Juan Ruiz.[2] In the classical authors the adjective often carries the meaning of the adverb, as in Guzmán de Alfarache „cada uno grita y trata de sola su locura” “each one shouts and deals with his own madness alone”.[2] In modern use solo can work almost as a conjunction with an adversative sense (solo que “except that”), and in Navarre it is then pronounced unstressed.[2][1]

Covarrubias (1611) defined it as “one who is without company” and noted that it is sometimes an adverb, as in tan solo.[10] The Diccionario de Autoridades gave “unique in its kind” as its first sense, as the Academy's dictionary still does.[11][4] The masculine noun solo now names a dance step done without a partner, a card game like tresillo, and in music a piece or passage played or sung by one person.[4][12] Derivatives include soledad (1490), whose sense “longing” (second half of the 16th century) parallels Portuguese saudade.[3][2]

Timeline

  • 1040 – first record, in a charter.[2][3]
  • c. 1140 – the Cantar de mio Cid: „ellos quatro solos son”.[2]
  • c. 1215 – the Vida de Santa María Egipcíaca: „sola salló como ladrón” “she left alone like a thief”.[2][9]
  • 1220–1250 – Berceo uses it as an adverb, “only”.[3][2]
  • 1250–1279 – Alfonso X's Lapidario uses it for “unique, the only one”.[13]
  • 1492 – Nebrija's Latin–Spanish dictionary renders Latin solum as sola mente.[14]
  • 1611 – Covarrubias notes the adverbial use in tan solo.[10]
  • 1884 – the Academy's dictionary has the phrase de solo a solo “between the two alone”.[15]

Meanings

Adjective

  1. unique, the only one of its kind: Hay un solo camino.[4][1]
  2. Without anything else, taken by itself, as in café solo “black coffee”.[4][12]
  3. Of a person: alone, without company: Vive solo desde hace años.[4][1]
  4. Without anyone to help or comfort one; lonely.[4][1]

Adverb

  1. only, solely, just: Solo quiero dormir.[4][16][1]

Noun

  1. (music) A solo: a piece or passage sung or played by one person.[4][12]
  2. (dance) A step danced without a partner.[4]
  3. (card games) A game like tresillo; in hombre and similar games, a play that takes all the tricks needed without help.[4]

Word family

  • soledad
  • solista
  • solamente
  • soledoso
  • solitario
  • soliloquio
  • Latin sōlus
  • Portuguese só

Usage notes

As an adverb the word is normally written solo; the Academy's dictionary allows the accented spelling sólo where it could be confused with the adjective.[17][1] The plural feminine appears in the set phrase a solas “alone, by oneself”.[4]

References

  1. ^ a b c d e f g h i j k l Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k Corominas, Joan; Pascual, José A. (1980–1991), Diccionario crítico etimológico castellano e hispánico, 6 vols., Madrid: Gredos, p. 5, 295
  3. ^ a b c d e Corominas, Joan (1973), Breve diccionario etimológico de la lengua castellana, 3rd ed., Madrid: Gredos, p. s.v. solo
  4. ^ a b c d e f g h i j k l 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. solo
  5. ^ a b c Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter
  6. ^ a b García de Diego, Vicente (1985), Diccionario etimológico español e hispánico, 2nd ed., Madrid: Espasa-Calpe (1st ed. 1954), p. 6221
  7. ^ Academia de la Llingua Asturiana (2000), Diccionariu de la Llingua Asturiana, Uviéu: ALLA; online at https://mas.academiadelallingua.com/diccionariu, p. s.v. solu
  8. ^ 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
  9. ^ a b c Real Academia Española (2013–), Corpus del Diccionario histórico de la lengua española (CDH), version 3.1, https://apps.rae.es/CNDHE, p. s.v. solo
  10. ^ a b Covarrubias Orozco, Sebastián de (1611), Tesoro de la lengua castellana o española, Madrid: Luis Sánchez (Biblioteca Wordkers transcription, CC BY 4.0), p. 1306
  11. ^ Real Academia Española (1726–1739), Diccionario de la lengua castellana (Diccionario de Autoridades), 6 vols., Madrid: Francisco del Hierro, p. s.v. solo
  12. ^ a b c Moliner, María (2007), Diccionario de uso del español, 3rd ed., Madrid: Gredos, p. s.v. solo
  13. ^ 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. solo
  14. ^ 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. solo
  15. ^ Real Academia Española (1884), Diccionario de la lengua castellana, 12th ed., Madrid: Imprenta de D. Gregorio Hernando (the first Academy edition with etymologies), p. 986
  16. ^ Battaner Arias, Paz (dir.) (2017), Diccionario general de la lengua española VOX, Barcelona: Larousse Editorial, p. s.v. solo
  17. ^ 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. solo2

Related etymologies

Cite this entry

“Solo.” Etymologically, 7 Nov. 2026, etymologically.com/es/solo. Accessed 7 Nov. 2026.

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