Etymologically

knapsack

Etymology and origin of the English word knapsack

Formation
Borrowing
Borrowed from
Low German Knappsack

Pronunciation

  • IPA: /ˈnæpsæk/[1]

Etymology

It is borrowed from Low German Knappsack,[2][3][4][5][6] probably from knappen “to eat”, literally “to crack, snap”,[2][3][4][5] which is of imitative origin,[2][4] and Sack “bag”.[2][3][4][5] Compare Dutch knapzak.[3][4][5] It is related to sack.[2][4]

Earliest recorded meaning

A bag of stout canvas or leather worn on the back by soldiers to carry necessities (1603, or c. 1600 in Etymonline).[7][3][5][4]

Semantic evolution

The bag was at first chiefly a soldier's,[7][6] but the word came to mean any similar bag carried on the back, as by hikers.[7][6] Knapsacking, travelling with a knapsack, is recorded from 1877.[7]

Timeline

  • 1603 – a soldier's bag for the back.[7][3][5]
  • 1877 – knapsacking.[7]

Modern meaning

Noun

  1. A bag of strong material with shoulder straps, carried on the back to hold supplies or belongings; a backpack or rucksack.

Word family

  • knapsacked
  • knapsack problem
  • sack
  • backpack
  • rucksack
  • haversack

References

  1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e The American Heritage Dictionary of the English Language (1992), 3rd ed., Boston: Houghton Mifflin
  3. ^ a b c d e f Barnhart, Robert K., ed. (1995), The Barnhart Concise Dictionary of Etymology, New York: HarperCollins
  4. ^ a b c d e f g Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  5. ^ a b c d e f Merriam-Webster's Collegiate Dictionary (2003), 11th ed., Springfield, Mass.: Merriam-Webster
  6. ^ a b c Random House Webster's Unabridged Dictionary (1999), 2nd ed., New York: Random House
  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

Related etymologies

Cite this entry

“Knapsack.” Etymologically, 14 Oct. 2026, etymologically.com/en/knapsack. Accessed 14 Oct. 2026.

Last edited on . ·