Etymologically

knife

Etymology and origin of the English word knife

Confidence
Established
Formation
Borrowing
First attested
a. 1100
Borrowed from
Old Norse knífr via Middle English, Old English
Ultimate origin
Old Norse (knífr)

Pronunciation

  • IPA: /naɪf/[1]

Etymology

It is inherited from Middle English knif, inherited from Old English cnīf, probably borrowed from Old Norse knífr (“knife, dirk”),[2][3][4][5] from Proto-Germanic *knībaz, the source also of Middle Low German knīf and Middle Dutch cnijf,[2][4][3] a word of uncertain origin.[2][4] There are also forms with p, such as German kneifen “to pinch”.[2][3] French canif “penknife” (mid-15th century) is probably of Germanic origin.[2]

Earliest recorded meaning

A cutting tool with a blade and handle: before 1100 in the OED and Barnhart.[6][3] A knife used as a weapon is from about 1175.[6]

Semantic evolution

A blade forming part of a machine is from 1833.[6] Before you can say knife, very quickly, is from 1874, and the knife for surgery from 1880.[6] To get one's knife into someone, to show malice, is from 1890,[6] and an atmosphere you could cut with a knife from 1892.[6] The verb, to stab with a knife, is from 1865,[2] to betray in politics later,[7][8] and the intransitive sense “to move like a knife” from 1920.[2]

Timeline

  • a. 1100 – a cutting tool.[6][3]
  • c. 1175 – a weapon.[6]
  • 1865 – verb, to stab.[2]
  • 1880 – the knife, surgery.[6]
  • 1920 – to cut through.[2]

Modern meaning

Noun

  1. A tool with a sharp blade fixed to a handle, used for cutting or as a weapon.
  2. A cutting blade in a machine.

Verb

  1. To cut or stab with a knife.
  2. To try to defeat someone by underhand means.
  3. To pass through something like a knife.

Word family

  • knifer
  • knifelike
  • knife-edge
  • knifepoint
  • paperknife
  • knife pleat
  • knife rest
  • penknife
  • jackknife

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 Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  3. ^ a b c d e Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  4. ^ a b c Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
  5. ^ Pearsall, Judy, ed. (1998), The New Oxford Dictionary of English, Oxford: Clarendon Press
  6. ^ a b c d e f g h i Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press
  7. ^ Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  8. ^ The American Heritage Dictionary of the English Language (1992), 3rd ed., Boston: Houghton Mifflin

Related etymologies

  • gap · also from Old Norse
  • bound · also from Old Norse
  • loose · also from Old Norse
  • gear · also from Old Norse
  • egg · also from Old Norse
  • trash · also from Old Norse
  • skill · also from Old Norse
  • odd · also from Old Norse
Cite this entry

“Knife.” Etymologically, 16 Oct. 2026, etymologically.com/en/knife. Accessed 16 Oct. 2026.

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