Etymologically

professor

Etymology and origin of the Latin word professor

Confidence
Established
Formation
Derivation
First attested
Valerius Maximus
Ultimate origin
Latin (profiteor)
Etymology tree
inherited borrowed derived
Latin professor
English professor

Pronunciation

  • IPA (Classical): [prɔˈfɛs.sɔr][1]
  • IPA (Ecclesiastical): [proˈfɛs.sor][1]

Forms

professor m (genitive professōris, feminine profestrīx); third declension[1]

Etymology

It is from Latin profiteor (“to declare publicly, profess”) + -tor.[2][1][3]

Earliest recorded meaning

Valerius Maximus says the teachers of that study are called sophists.[2] The TLL finds it only in prose, and Köbler dates Valerius Maximus to the 1st century AD.[3][4] Celsus, of the same period, calls philosophers sapientiae professōrēs.[5]

Semantic evolution

It was a person who claims expertise in an art or science, a teacher, and Lewis & Short call it post-Augustan.[2][5] Quintilian and Suetonius use it of teachers of rhetoric and grammar.[5][6] An inscription uses it of a candidate for the aedileship.[2]

In medieval Latin it was a scribe of a town council, a monk who has taken vows and a university teacher.[7][4] British writers used it of one who professes something, such as evangelical poverty.[8] English professor is recorded in the late 14th century as one who teaches a branch of knowledge.[9]

Timeline

  • 14–37 AD – Celsus speaks of the teachers of wisdom.[5][4]
  • 1st century AD – Valerius Maximus uses it of sophists.[2][4]
  • c. 35–95/96 AD – Quintilian uses it of a teacher of rhetoric.[2][4]
  • late 14th century – Borrowed into English as professor.[9]

Meanings

Noun

  1. A public teacher, professor.[2][5]
  2. A candidate for office.[2]
  3. (Medieval Latin) A municipal scribe; a professed monk; a university teacher.[7][4]
  4. (Medieval Latin) One who professes something.[8]

References

  1. ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  4. ^ a b c d e f Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  5. ^ a b c d e Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  6. ^ Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
  7. ^ a b Niermeyer, J. F. (1976), Mediae Latinitatis Lexicon Minus, Leiden: Brill
  8. ^ a b Latham, R. E., D. R. Howlett, R. K. Ashdowne, et al. (1975–2013), Dictionary of Medieval Latin from British Sources, London: British Academy / Oxford University Press
  9. ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com

Borrowed into

Cite this entry

“Professor.” Etymologically, 15 Oct. 2026, etymologically.com/la/professor. Accessed 16 Oct. 2026.

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