Etymologically

cap

Etymology and origin of the English word cap

Confidence
Established
Formation
Borrowing
First attested
c. 1000
From
Old English cæppe via Middle English
Ultimate origin
Late Latin (cappa)

Pronunciation

Etymology

It is inherited from Middle English cappe, inherited from Old English cæppe (“hood, head-covering, cape”),[2][3] an early borrowing, shared with other Germanic languages (Old Frisian and Middle Dutch kappe, Old High German chappa),[2] from Late Latin cappa (“cape, hooded cloak, head covering”),[2][3][4] a word of uncertain origin, perhaps from Latin caput “head”.[3][5][4] It is a doublet of cape “cloak”,[3] and related to chapel, chaperone and chapeau.[6][2]

Earliest recorded meaning

A hood or covering for the head: about 1000 in the OED and Barnhart, in Ælfric's Glossary.[7][3] The Late Latin word apparently first meant a woman's head-covering, then the hood of a cloak and the cloak itself.[2]

Semantic evolution

A soft, close-fitting head covering is from the early 13th century, originally for women, while men's caps date from the late 14th century.[2][7] Cap-like coverings on the ends of things, as in hubcap, are from the mid-15th century.[2] A cardinal's biretta is from 1591, and the cap and gown of a scholar from 1732.[7][2] A fool's cap and bells is from 1781,[2] and the dunce's cap gave if the cap fits, wear it by the early 19th century.[6] The percussion cap of a firearm is by 1825, hence the toy cap gun (1855).[2] In British sport a cap, given to a player chosen for a national team, is from 1879.[7][8] The thinking cap is from 1839,[2] and a contraceptive cap by 1916.[2] The verb, to put a cap on, is from about 1400,[3][2] to cover as with a cap from about 1600,[2][3] to bring to a climax from the 1580s,[2] and to outdo from 1821.[3][2] To set an upper limit on, as spending, is a later sense.[9][8]

Timeline

  • c. 1000 – a hood.[7][3]
  • early 13th century – a close-fitting head covering.[2]
  • c. 1400 – verb, to put a cap on.[3][2]
  • mid-15th century – a cover for the end of something.[2]
  • 1580s – to complete, crown.[2]
  • 1732 – cap and gown.[2]
  • 1821 – to outdo.[3][2]
  • 1825 – a percussion cap.[2]
  • 1879 – a sporting cap.[7]

Modern meaning

Noun

  1. A soft, flat hat, often with a peak, or a close-fitting head covering.
  2. A head covering showing rank or membership: a nurse's cap.
  3. A cover or lid for the end or top of something: a bottle cap.
  4. An upper limit on spending or prices.
  5. (chiefly British) A place in a national sports team, or a player who has won one.
  6. A small explosive used in a toy gun.
  7. An artificial cover for a tooth.

Verb

  1. To put a cap or cover on.
  2. To set an upper limit on.
  3. To end something in a way that is better or worse than what came before; to outdo.
  4. (chiefly British) To choose a player for a national team.

Word family

  • capless
  • capful
  • decap
  • hubcap
  • caplet
  • mudcap
  • blackcap

Usage notes

Cap is also short for capital letter, and in drug slang for capsule.[9][4][8] A Scots cap, a wooden bowl, is from Middle English cop “cup”.[4][10]

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 k l m n o p q r s t u v w Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  3. ^ a b c d e f g h i j k Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  4. ^ a b c d 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. ^ a b Cresswell, Julia (2021), Oxford Dictionary of Word Origins, 3rd ed., Oxford: Oxford University Press
  7. ^ a b c d e f Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press
  8. ^ a b c Collins English Dictionary (2023), Glasgow: HarperCollins
  9. ^ a b The American Heritage Dictionary of the English Language (1992), 3rd ed., Boston: Houghton Mifflin
  10. ^ Wright, Joseph, ed. (1898–1905), The English Dialect Dictionary, 6 vols., Oxford: Henry Frowde; via EDD Online 4.0, University of Innsbruck (CC BY 4.0)

Related etymologies

  • kitchen · also from Old English
  • stream · also from Old English
  • seek · also from Old English
  • draft · also from Old English
  • kingdom · also from Old English
  • wave · also from Old English
  • guilty · also from Old English
  • empty · also from Old English
Cite this entry

“Cap.” Etymologically, 16 Oct. 2026, etymologically.com/en/cap. Accessed 16 Oct. 2026.

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