Etymologically

Etymology and origin of the Portuguese word sob

Confidence
Established
Formation
Inherited
First attested
1200s spelt so, sso and su More words from the 13th century
Inherited from
Latin sub
Ultimate origin
Proto-Indo-European *upo
Etymology tree
inherited borrowed derived
Proto-Indo-European *upó
Latin sub
Portuguese sob
Proto-Germanic *uba
German ob
The word's journey
From the same root
Ancient Greek ὕπτιος (húptios) ← *upó
Latin subdolus ← sub
Latin subinde ← sub
Latin sublīmis ← sub
Latin subter ← sub
Latin subterrāneus ← sub
Latin subtīlis ← sub
Latin subtus ← sub
German obwohl ← ob

Pronunciation

  • Brazil: /ˈso.bi/[1]
  • Portugal: /ˈsob/, [ˈsoβ][1]
  • Portugal, Southern: /ˈsob/[1]

Etymology

It is inherited from Latin sub (“under”), written Old Galician-Portuguese so and Old Galician-Portuguese su in the oldest texts.[2][3][1] The final ⟨b⟩ was restored later after the Latin spelling: Nascentes calls the modern form a learned remaking of the archaic one, which survives in socapa and socolor.[4][5] The REW likewise sets the old Portuguese form without ⟨b⟩ against the modern one.[6]

The same Latin word is the archaic Spanish so and the old Galician so.[6][7][8]

The Latin word goes back to Proto-Italic *supo, from Proto-Indo-European *upo (“up, from below”), the source also of Ancient Greek ὑπό (hupó, “under”) and Gothic 𐌿𐍆 (uf, “under”).[9][1]

Earliest recorded meaning

Houaiss dates the preposition to the 13th century.[2] The Cantigas de Santa Maria use so for “under”: so o chapitel “under the canopy”, poi-la levou sso ssa capa “for he carried her under his cloak”, and de so “from under”.[10] The cantigas d'amigo have it too, and the Miragres de Santiago write both so and su.[10]

Semantic evolution

Notarial documents of the 14th century used the preposition above all in the formula so pena de “under penalty of”, as in Noia in 1332 and 1381.[10] Bluteau still felt sob to be a Latin word used in decrees and deeds, either standing alone (sob meu sello “under my seal”) or joined to the next word, as in sobcolor and sobpena.[11] Vieira quotes sob certa pena from the Ordenações Afonsinas.[12]

Modern Portuguese uses it for position beneath something and for subordination, protection, cause and circumstance: sob as ordens de, sob a proteção de, sob medida.[2][13]

Timeline

  • 13th century – so, sso and su.[2][3]
  • 1332 – so a pena aquí contiúda in a notarial book of Noia.[10]
  • c. 1430 – sob in the Horto do Esposo.[14]
  • 1450–1516 – socolor “under the pretext of”, later also written sobcolor.[15]
  • 1712–1728 – Bluteau calls sob a Latin word of decrees and deeds.[11]
  • 1881 – first record of the verb sobpor “to place beneath”.[3]

Meanings

Preposition

  1. under, beneath; lower than something in space: O gato dorme sob a mesa.[2][16][1]
  2. Covered by; in the shelter or shade of: Descansámos sob uma oliveira.[2][17]
  3. Subject to an authority or command: sob as ordens do capitão.[2][16]
  4. In the time or under the rule of: sob o reinado de D. Dinis.[13][18]
  5. Under the protection of.[2][17]
  6. According to; from the point of view of: sob medida, sob este aspeto.[2][19]
  7. Under the effect or influence of; in a state of: sob anestesia, sob pressão.[2][13]
  8. Amid, accompanied by: sob aplausos.[2]

Word family

  • sobpor
  • socapa
  • socolor
  • sub-
  • Latin sub
  • Spanish so

Usage notes

Sob pena de “under penalty of”, the old formula of the deeds, is still a fixed phrase.[19][10] The opposite of sob is sobre.[16]

References

  1. ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k Houaiss, Antônio; Villar, Mauro de Salles (2001), Dicionário Houaiss da língua portuguesa, Rio de Janeiro: Objetiva, p. s.v. sob
  3. ^ a b c Cunha, Antônio Geraldo da (2010), Dicionário etimológico da língua portuguesa, 4th ed., Rio de Janeiro: Lexikon, p. s.v. sob
  4. ^ Nascentes, Antenor (1966), Dicionário etimológico resumido, Rio de Janeiro: Instituto Nacional do Livro, p. s.v. sob
  5. ^ Nascentes, Antenor (1955), Dicionário etimológico da língua portuguesa, vol. 1: Nomes comuns, Rio de Janeiro (1st ed. 1932, preface by W. Meyer-Lübke), p. 474
  6. ^ a b Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter, p. 8344
  7. ^ Corominas, Joan (1973), Breve diccionario etimológico de la lengua castellana, 3rd ed., Madrid: Gredos, p. s.v. so
  8. ^ Estraviz, Isaac Alonso, Dicionário Estraviz, https://estraviz.org, p. s.v. so
  9. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  10. ^ a b c d e Instituto da Lingua Galega, Dicionario de dicionarios do galego medieval (DDGM), ed. Ernesto González Seoane, Santiago de Compostela: Universidade de Santiago de Compostela, https://ilg.usc.gal/ddgm, p. s.v. so
  11. ^ a b Bluteau, Raphael (1712–1728), Vocabulario portuguez e latino, 8 vols. + 2 supplement vols., Coimbra / Lisboa (CLP transcription, Universidade de Aveiro), p. s.v. sob
  12. ^ Vieira, Frei Domingos (1871–1874), Grande Diccionario Portuguez ou Thesouro da lingua portugueza, 5 vols., Porto: Ernesto Chardron e Bartholomeu H. de Moraes, p. 5, 540
  13. ^ a b c Academia das Ciências de Lisboa, Dicionário da Língua Portuguesa, revised online edition (2023–) of the Dicionário da Língua Portuguesa Contemporânea (2001), https://dicionario.acad-ciencias.pt, p. s.v. sob
  14. ^ Centro de Linguística da Universidade de Lisboa, CTA – Corpus de Textos Antigos, https://teitok.clul.ul.pt/cta, p. s.v. sob
  15. ^ Houaiss, Antônio; Villar, Mauro de Salles (2001), Dicionário Houaiss da língua portuguesa, Rio de Janeiro: Objetiva, p. s.v. socolor
  16. ^ a b c Aulete, Francisco Júlio Caldas, Dicionário contemporâneo da língua portuguesa (1st ed. 1881), online as Aulete Digital, Rio de Janeiro: Lexikon, https://aulete.com.br, p. s.v. sob
  17. ^ a b Michaelis: Moderno Dicionário da Língua Portuguesa, São Paulo: Melhoramentos (online as Michaelis Dicionário Brasileiro da Língua Portuguesa, https://michaelis.uol.com.br), p. s.v. sob
  18. ^ Dicionário Priberam da Língua Portuguesa, Lisboa: Priberam Informática, https://dicionario.priberam.org, p. s.v. sob
  19. ^ a b Porto Editora (2013), Grande Dicionário da Língua Portuguesa, Porto: Porto Editora, p. 8553

Related etymologies

Cite this entry

“Sob.” Etymologically, 15 Nov. 2026, etymologically.com/pt/sob. Accessed 16 Nov. 2026.

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