Etymologically

Etymology and origin of the Portuguese word professor

Confidence
Established
Formation
Borrowing
First attested
1400s More words from the 15th century
Borrowed from
Latin professor
Ultimate origin
Latin profiteor
Etymology tree
inherited borrowed derived
Latin fateor
Latin prōfiteor
English profess
Latin professor
English professor
French professeur
German Professor
Italian professore
Portuguese professor
Romanian profesor
Spanish profesor
From the same root
Latin cōnfiteor ← fateor
Latin īnfitior ← fateor
Latin professiō ← prōfiteor
Latin prŏfessus ← prōfiteor
English prof ← professor
French prof ← professeur

Pronunciation

  • Brazil: /pɾo.feˈsoʁ/, [pɾo.feˈsoh][1]
  • São-Paulo: /pɾo.feˈsoɾ/[1]
  • Rio-de-Janeiro: /pɾo.feˈsoʁ/, [pɾo.feˈsoχ][1]
  • Caipira: /pɾo.feˈsoɻ/[1]

Forms

professor m (plural professores, feminine professora, feminine plural professoras)[1] 15th-century texts have the plurals professorees and profesores.[2] Dialect speech in Portugal has prefessor and pressor.[3]

Etymology

It is borrowed from Latin professor (“one who professes an art; a teacher”), a learned word first recorded in the 15th century.[2][4][5][1] The Latin noun is formed on professus, the past participle of profiteor (“to declare publicly; to profess; to teach”).[2][6][1] Nascentes explains it as “one who declares his knowledge before others”.[5] In Latin it is found after the Augustan age, of public teachers of rhetoric, grammar and the arts.[7]

Cunha lists the word under the verb professar, which has the same Latin root.[4] The same word is Galician profesor.[8]

Earliest recorded meaning

Houaiss's first sense is “one who professes a creed or a religion”.[2] A Galician document of 1454 calls a priest professor e prior, in the religious sense.[9][2]

Semantic evolution

Pereira's Thesouro (1697) has professor, ou professora, with Latin profitens.[10] Bluteau defines the professor as one who teaches an art or science in public, such as rhetoric or philosophy.[11] Morais (1789) still gives first the member of an order of knighthood who has made his profession, and then the teacher of an art or science.[12]

The word now means any teacher, from a primary school to a university, and figuratively an expert.[2][13] In Portugal it is also a title of university teachers with a doctorate.[14] The word passed into Kabuverdianu as profesor.[1]

Timeline

  • 15th century – first record, with the plurals professorees and profesores.[2][4]
  • 1454 – professor e prior in a Galician document.[9]
  • 1697 – Pereira enters professor, ou professora.[10]
  • 1712–1728 – Bluteau defines it as a public teacher of an art or science.[11]
  • 1789 – Morais gives the religious and the teaching senses.[12]
  • 1871–1874 – Vieira's dictionary defines it as a man who teaches letters, a science or an art.[15]

Meanings

Noun

  1. A teacher in a school, college or university: a professora de português.[2][16][1]
  2. Anyone who teaches a subject or skill: professor de natação.[2][16]
  3. A person who has the diploma of a teacher-training course.[2]
  4. (figurative) An expert, someone highly skilled in something.[2][13]
  5. One who professes a religion or publicly teaches its truths.[2][13]
  6. (Portugal) A university teacher holding a doctorate; a holder of a chair.[14]
  7. A player in a first-rank orchestra.[16]

Adjective

  1. That professes (a faith).[2]
  2. That teaches, or holds the title of teacher.[2][16]

Word family

  • professorado
  • professorar
  • professorinho
  • professo
  • professar
  • profissão

Usage notes

Brazilian universities have the ranks professor auxiliar de ensino, professor assistente, professor adjunto and professor titular; the professor catedrático held a chair until the university reform of 1968.[2]

References

  1. ^ a b c d e f g h i Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n o Houaiss, Antônio; Villar, Mauro de Salles (2001), Dicionário Houaiss da língua portuguesa, Rio de Janeiro: Objetiva, p. s.v. professor
  3. ^ Instituto da Lingua Galega, Tesouro do léxico patrimonial galego e portugués (TLPGP), Santiago de Compostela: Universidade de Santiago de Compostela, https://ilg.usc.gal/tesouro, p. s.v. professor
  4. ^ a b c Cunha, Antônio Geraldo da (2010), Dicionário etimológico da língua portuguesa, 4th ed., Rio de Janeiro: Lexikon, p. s.v. professar
  5. ^ a b Nascentes, Antenor (1966), Dicionário etimológico resumido, Rio de Janeiro: Instituto Nacional do Livro, p. s.v. professor
  6. ^ Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press, p. s.v. professor
  7. ^ Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press, p. s.v. professor
  8. ^ Wiktionary, the free dictionary, https://en.wiktionary.org, p. s.v. professor
  9. ^ a b 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. professor
  10. ^ a b Pereira, Bento (1697), Thesouro da lingoa portuguesa, in the 1697 edition of his Prosodia (1st ed. 1647; CLP transcription, Universidade de Aveiro), p. s.v. professor
  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. professor
  12. ^ a b Silva, António de Morais (1789), Diccionario da lingua portugueza composto pelo padre D. Rafael Bluteau, reformado, e accrescentado, 2 vols., Lisboa: Simão Thaddeo Ferreira, p. 2, 249
  13. ^ a b c Ferreira, Aurélio Buarque de Holanda, Novo dicionário Aurélio da língua portuguesa, digital edition, p. s.v. professor
  14. ^ a b 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. professor
  15. ^ Vieira, Frei Domingos (1871–1874), Grande Diccionario Portuguez ou Thesouro da lingua portugueza, 5 vols., Porto: Ernesto Chardron e Bartholomeu H. de Moraes, p. 4, 960
  16. ^ a b c d Dicionário Priberam da Língua Portuguesa, Lisboa: Priberam Informática, https://dicionario.priberam.org, p. s.v. professor

Related etymologies

Cite this entry

“Professor.” Etymologically, 15 Nov. 2026, etymologically.com/pt/professor. Accessed 16 Nov. 2026.

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