Etymologically

Etymology and origin of the Spanish word tranquilo

Confidence
Established
Formation
Borrowing
First attested
c. 1440 Marqués de Santillana More words from the 15th century
Borrowed from
Latin tranquillus
Ultimate origin
Latin tranquillus
Etymology tree
inherited borrowed derived
Latin trāns
French très
Latin tranquillus
English tranquil
French tranquille
Italian tranquillo
Spanish tranquilo
From the same root
English traitor ← trāns
Latin trādō ← trāns
Latin trāmes ← trāns
Latin trānsferō ← trāns
Latin trānstrum ← trāns
Latin tranquillē ← tranquillus
Latin tranquillitās ← tranquillus

Pronunciation

  • /tɾanˈkilo/, [t̪ɾãŋˈki.lo][1]

Forms

tranquilo (feminine tranquila, masculine plural tranquilos, feminine plural tranquilas)[1]

Etymology

It is borrowed from Latin tranquillus (“calm, still”).[2][3][4][1] The BDELC dates it about 1440; the DCECH cites the Marqués de Santillana, then Góngora in 1582, and finds it common in the Quijote.[2][3] The noun tranquilidad, from tranquillitās, is also recorded about 1440.[2][3]

The Latin adjective is perhaps formed from trāns (“across”) and the root of quiēs (“rest”).[5][1] De Vaan finds this etymology, with a root Proto-Indo-European *kʷih₁- (“to be quiet”), vague in meaning and doubtful in sound, since the change of *-nskʷ- to -nqu- is disputed and the suffix unclear.[6] The same Latin root gives quieto and quedo.[3]

Earliest recorded meaning

The first record is in the Marqués de Santillana, about 1440.[3][2] The word was rare at first: the Old Spanish Textual Archive has only eleven examples, from 1484 on, and Covarrubias and Cristóbal de las Casas list only tranquilidad.[7][3]

Semantic evolution

Cervantes uses it of the sea and of a peaceful life: mar tranquilo, en paz tranquila.[8] The Diccionario de Autoridades defined it as “quiet, calm, peaceful” and, by analogy, of a mind not disturbed in its peace and security.[9] The DLE now adds a person who takes things calmly, without hurry or nerves, and does not care what others think, a sense that Moliner also records as a noun.[4][10]

As an interjection, ¡tranquilo! means “calm down!”.[1][10] In Venezuela tranquilo is popular for “drunk”.[11]

Timeline

  • c. 1440 – first recorded, in the Marqués de Santillana, and tranquilidad about the same time.[3][2]
  • 1484 – the first record in the Old Spanish Textual Archive.[7]
  • 1582 – Góngora uses it.[3]
  • 1746 – the first record from the Americas, in Mexico.[12]
  • 1884 – the Academy's dictionary gives the etymology from Latin tranquillus.[13]

Meanings

Adjective

  1. calm, quiet, peaceful: un pueblo tranquilo, un lago tranquilo.[4][1]
  2. Free of worry or remorse: Duermo tranquilo porque hice lo correcto.[10][14]
  3. Of a person, easygoing: taking things without hurry or nerves and not caring what others think.[4][10]
  4. (Venezuela, colloquial) drunk.[11]

Interjection

  1. ¡Tranquilo! relax, calm down![1][10]

Word family

  • tranquilidad
  • tranquilizar
  • intranquilo
  • tranquilizante

Usage notes

Conciencia tranquila is a clear conscience.[4][10]

References

  1. ^ a b c d e f g Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e Corominas, Joan (1973), Breve diccionario etimológico de la lengua castellana, 3rd ed., Madrid: Gredos, p. s.v. tranquilo
  3. ^ a b c d e f g h Corominas, Joan; Pascual, José A. (1980–1991), Diccionario crítico etimológico castellano e hispánico, 6 vols., Madrid: Gredos, p. 4, 708
  4. ^ a b c d e 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. tranquilo
  5. ^ Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press, p. s.v. tranquillus
  6. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill, p. s.v. tranquillus
  7. ^ a b Hispanic Seminary of Medieval Studies (2026), Old Spanish Textual Archive (OSTA): semi-paleographic transcriptions of Old Spanish texts, ed. Francisco Gago Jover et al., https://www.hispanicseminary.org, p. s.v. tranquilo
  8. ^ Cejador y Frauca, Julio (1905–1906), La lengua de Cervantes: gramática y diccionario de la lengua castellana en El ingenioso hidalgo don Quijote de la Mancha, 2 vols., Madrid: Jaime Ratés, p. 1108
  9. ^ Real Academia Española (1726–1739), Diccionario de la lengua castellana (Diccionario de Autoridades), 6 vols., Madrid: Francisco del Hierro, p. 6, 323
  10. ^ a b c d e f Moliner, María (2007), Diccionario de uso del español, 3rd ed., Madrid: Gredos, p. s.v. tranquilo
  11. ^ a b Asociación de Academias de la Lengua Española (2010), Diccionario de americanismos, Lima: Santillana; online at https://www.asale.org/damer, p. s.v. tranquilo
  12. ^ 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. tranquilo
  13. ^ Real Academia Española (1884), Diccionario de la lengua castellana, 12th ed., Madrid: Imprenta de D. Gregorio Hernando (the first Academy edition with etymologies), p. 1041
  14. ^ Battaner Arias, Paz (dir.) (2017), Diccionario general de la lengua española VOX, Barcelona: Larousse Editorial, p. s.v. tranquilo

Related etymologies

Cite this entry

“Tranquilo.” Etymologically, 7 Nov. 2026, etymologically.com/es/tranquilo. Accessed 7 Nov. 2026.

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