Etymologically

convert

Etymology and origin of the English word convert

Confidence
Established
Formation
Borrowing
First attested
c. 1300
Borrowed from
Old French convertir
Ultimate origin
Latin (converto)

Pronunciation

  • IPA: /ˈkɑn.vɚt/, /kənˈvɝt/; /ˈkɒn.vət/, /kənˈvɜːt/ (UK)[1]

Etymology

It is Middle English converten, borrowed from Old French convertir (“to turn round; change; win over”),[2][3][4] from Vulgar Latin *convertire, from Latin convertere (“to turn around, transform”),[3][5] from com-, intensive, and vertere (“to turn”) (see verse),[2][3] from PIE Proto-Indo-European *wer- (“to turn, bend”).[3]

Earliest recorded meaning

To turn from one religion to another, especially to Christianity: about 1300.[3][2]

Semantic evolution

Old English glossed the Latin verb with gecyrran, to turn.[3] To turn a thing about, give it a different direction, is from 1382,[6] and to change into another form or substance from the late 14th century.[3] To turn to another use is from the late 15th century.[3] The noun, a person who has changed religion, is from 1561 (the 1560s),[2][3][4] replacing earlier convers (before 1325, in the Cursor Mundi).[2][3] A person converted to another opinion is from the 1640s.[3] To express a quantity in other units is a mathematical sense.[7]

Timeline

  • c. 1300 – to change religion.[3]
  • before 1325 – convers (noun).[2]
  • late 14th century – to transform.[3]
  • 1561 – convert (noun).[2]
  • 1640s – a convert to an opinion.[3]

Modern meaning

Verb

  1. To change into another form, substance or state; to transform.
  2. To adapt to a different use or purpose.
  3. To persuade someone to adopt a religion or belief, or to adopt one.
  4. To exchange for something of equal value, as one currency for another.

Noun

  1. A person who has been converted, especially to a religion or belief.

Word family

  • convertive
  • convertor
  • interconvert
  • preconvert
  • reconvert
  • converter
  • convertible

References

  1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  3. ^ a b c d e f g h i j k l m n Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  4. ^ a b Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  5. ^ Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
  6. ^ 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

“Convert.” Etymologically, 16 Oct. 2026, etymologically.com/en/convert. Accessed 16 Oct. 2026.

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