Etymologically

profiteor

Etymology and origin of the Latin word profiteor

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

Pronunciation

  • IPA (Classical): [prɔˈfɪ.te.ɔr][1]
  • IPA (Ecclesiastical): [proˈfiː.te.or][1]

Forms

profiteor (present infinitive profitērī, perfect active professus sum); second conjugation, deponent[1]

Etymology

It is from prō- “forth, publicly” and fateor “to acknowledge”, as Varro noted.[2][1][3] The Tabula Heracleensis has old forms ⟨profitērei⟩ and ⟨profitēminō⟩.[4]

Earliest recorded meaning

The OLD's earliest citation is from Ennius, of declaring openly.[2] Köbler dates Ennius 204–169 BC.[5]

Semantic evolution

It meant to declare openly, avow, as in Cicero, and to make a return of property to the authorities, and nōmen profitērī to enrol, as in Livy.[2][6] It meant to promise one's help, to undertake to be, and in Sallust indicium profitērī to volunteer evidence.[2] From Cicero it meant to profess, lay claim to a quality, to profess oneself to be, to make something one's profession, and to teach a subject publicly.[2] Döderlein explains that fatērī is to disclose, profitērī to avow freely and openly.[7]

In Ecclesiastical Latin it meant to profess, admit, acknowledge.[8] Its agent noun professor gave English professor in the late 14th century, and its participle professus gave English profess in the early 14th century, first “to take a vow”.[9]

Timeline

  • 204–169 BC – Ennius uses it of declaring.[2][5]
  • 86–34 BC – Sallust uses indicium profitērī.[2][5]
  • 81–43 BC – Cicero uses it of professing and teaching.[2][5]

Meanings

Verb

  1. To declare openly, avow.[2]
  2. To make a return of property, nōmen profitērī, to enrol.[2]
  3. To promise, offer.[2]
  4. To profess, lay claim to; to profess to be.[2]
  5. To practise; to teach publicly.[2]

Word family

  • cōnfiteor
  • diffiteor
  • fateor
  • English profess
  • English professor

References

  1. ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  4. ^ Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  5. ^ a b c d Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  6. ^ Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
  7. ^ Döderlein, Ludwig (1874), Döderlein’s Hand-book of Latin Synonymes, tr. H. H. Arnold, Andover: W. F. Draper
  8. ^ Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
  9. ^ Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com

Derived terms

Cite this entry

“Profiteor.” Etymologically, 16 Oct. 2026, etymologically.com/la/profiteor. Accessed 16 Oct. 2026.

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