Etymologically

cousin

Etymology and origin of the English word cousin

Confidence
Established
Formation
Borrowing
First attested
c. 1225
Borrowed from
Old French cosin via Middle English
Ultimate origin
Latin (soror)

Pronunciation

  • IPA: /ˈkʌz.ən/[1]

Etymology

It is inherited from Middle English cosin, borrowed from Old French cosin, cusin (“nephew; kinsman; cousin”),[2][3][4] from Latin cōnsobrīnus (“mother's sister's child”),[2][3] from com- (“with, together”) and sobrīnus “cousin on the mother's side”, earlier *sosrīnos, from soror (“sister”).[2][3][5] It is related to sister.[2][3]

Earliest recorded meaning

A relative by blood or marriage: about 1225 in King Horn according to Barnhart, the early 13th century in Etymonline; it is a surname from 1160.[3][2]

Semantic evolution

The modern sense, the child of an uncle or aunt, is attested by about 1300,[2][3] but throughout Middle English the word was also used of grandchildren, godchildren and especially nephews and nieces.[2][6] A closely related thing is from the late 14th century.[2] From 1418 it was used by one sovereign addressing another.[7] First cousin and second cousin are from 1660,[7] and kindred nations, such as the British and Americans, are cousins from 1837.[7] Old English had separate words for some kinds of cousin, such as fæderan sunu “father's brother's son”.[2]

Timeline

  • 1160 – a surname.[3]
  • c. 1225 – a relative.[3]
  • c. 1300 – the child of an uncle or aunt.[2][3]
  • 1418 – between sovereigns.[7]
  • 1660 – first and second cousin.[7]

Modern meaning

Noun

  1. A child of one's uncle or aunt.
  2. A more distant relative descended from the same ancestor.
  3. A person or thing related to another by nature or origin: our American cousins.

Word family

  • cousinhood
  • cousinly
  • cousinship
  • cousinage
  • cater-cousin
  • coz
  • cousinry
  • sister

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 f g h i j Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  3. ^ a b c d e f g h i Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  4. ^ Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  5. ^ Pearsall, Judy, ed. (1998), The New Oxford Dictionary of English, Oxford: Clarendon Press
  6. ^ Cresswell, Julia (2021), Oxford Dictionary of Word Origins, 3rd ed., Oxford: Oxford University Press
  7. ^ a b c d e Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press

Related etymologies

Cite this entry

“Cousin.” Etymologically, 16 Oct. 2026, etymologically.com/en/cousin. Accessed 16 Oct. 2026.

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