Etymologically

confirm

Etymology and origin of the English word confirm

Confidence
Established
Formation
Borrowing
First attested
before 1250
Borrowed from
Old French confermer via Middle English
Ultimate origin
Latin (firmus)

Pronunciation

  • IPA: UK /kənˈfɜːm/, US /kənˈfɝːm/[1]

Etymology

It is inherited from Middle English confirmyen, confermen, borrowed from Old French confermer (“to strengthen, establish”) and directly from Latin cōnfirmāre (“to make firm, strengthen”),[2][3][4] from con- (here intensive) and firmāre (“to strengthen”), from firmus (“firm, steadfast”).[2][3][4] It is related to firm.[3][5]

Earliest recorded meaning

To ratify or make valid by a legal act: before 1250 in Barnhart, the mid-13th century in Etymonline.[3][2] The OED's first quotation, for “make firm, strengthen”, is from before 1300.[6]

Semantic evolution

Ratifying a person in an office is from 1297.[6] Administering the church rite of confirmation is from about 1315,[6] and confirmation itself from about 1303.[3] To make certain, to verify the truth of something, is from the late 14th century.[2] To strengthen someone in an opinion or purpose is from 1485.[6] Confirmed, firmly established in a habit, as in a confirmed bachelor, is from about 1350.[3]

Timeline

  • before 1250 – to ratify.[3]
  • 1297 – to ratify a person in an office.[6]
  • c. 1315 – to administer confirmation.[6]
  • late 14th century – to verify.[2]
  • 1485 – to strengthen in an opinion.[6]

Modern meaning

Verb

  1. To show or state that something is true or correct; to verify.
  2. To make an arrangement definite: confirm a booking.
  3. To make a belief or feeling stronger.
  4. To make something valid by a formal act; to ratify.
  5. To admit someone to full membership of a church by the rite of confirmation.

Word family

  • confirmability
  • confirmable
  • confirmer
  • confirmingly
  • preconfirm
  • unconfirm
  • reconfirm
  • confirmation
  • firm
  • affirm

Usage notes

Among its synonyms, confirm usually suggests removing all doubt about something that was uncertain, while corroborate means supporting a statement with further evidence, and substantiate means proving it with solid evidence.[7]

References

  1. ^ Jones, Daniel (2011), Cambridge English Pronouncing Dictionary, 18th ed., ed. Peter Roach, Jane Setter and John Esling, Cambridge: Cambridge University Press
  2. ^ a b c d e Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  3. ^ a b c d e f g Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  4. ^ a b Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
  5. ^ Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  6. ^ a b c d e f g Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press
  7. ^ The American Heritage Dictionary of the English Language (1992), 3rd ed., Boston: Houghton Mifflin

Related etymologies

Cite this entry

“Confirm.” Etymologically, 16 Oct. 2026, etymologically.com/en/confirm. Accessed 16 Oct. 2026.

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