Etymologically

case

Etymology and origin of the English word case

Confidence
Established
Formation
Borrowing
First attested
before 1250 (Ancrene Riwle)
Borrowed from
Old French cas via Middle English
Ultimate origin
Proto-Indo-European (*kad-)

Pronunciation

  • IPA: /keɪs/[1]

Etymology

In the sense “instance, situation” it is inherited from Middle English cas, borrowed from Old French cas (“event, happening, situation”),[2][3] from Latin cāsus (“a fall; chance, event”), from cās-, the past-participle stem of cadere (“to fall”),[3][4] from Proto-Indo-European *kad- (“to fall”).[2][5] The idea is that what happens is what “falls” (compare befall).[2] In grammar the Latin word translates Greek πτῶσις (ptôsis, “a falling”).[6][7][8] The sense “box, container” belongs to a separate word, Middle English casse, from Old North French casse (Old French chasse, modern French châsse (“reliquary”) and caisse (“chest”)),[9][10][2] from Latin capsa (“box, case for books”), from capere (“to take, hold”),[3][2][10] from Proto-Indo-European *kap- (“to grasp”).[2] Latin capsa is also behind capsule and cash,[11] and English chase “frame” is a doublet of case.[6]

Earliest recorded meaning

Something that happens to someone; a state of affairs (before 1250, in the Ancrene Riwle).[9][2]

Semantic evolution

Because a word for “what happens” could cover almost anything, case spread into many fields.[2] It meant “an instance, an example” from about 1300, “the actual state of affairs” (that is the case) from about 1400,[2][3] and in the late 14th century acquired its legal, medical and grammatical senses.[2][8] In case, “in the event”, dates from the mid-14th century.[2] An incident under police investigation has been a case since 1838, and American slang used case for an odd or remarkable person from 1848.[2] Weekley called it “a much overworked word”.[12] The other case, a container, is recorded before 1325 in the Cursor Mundi;[9] it was used of an outer covering from the late 14th century and of a frame from the 1660s, as in staircase.[2] Printers kept capital letters in the upper of their two type cases, hence upper case and lower case (1862).[2] The verb “to put in a case” is from 1575,[3][13] and the American criminal slang “to examine (a place) before robbing it” from 1915.[3][2][14]

Timeline

  • before 1250 – a state of affairs (Ancrene Riwle).[9]
  • c. 1300 – an instance, an example.[2][3]
  • before 1325 – a box or container (Cursor Mundi).[9]
  • mid-14th century – in case.[2]
  • late 14th century – a lawsuit; an instance of a disease; a grammatical case.[2]
  • c. 1400 – the actual state of affairs.[2]
  • 1575 – verb, to put in a case.[3][13]
  • 1660s – a frame, as in staircase.[2]
  • 1838 – a matter for police investigation.[2]
  • 1848 – (slang) an odd or remarkable person.[2]
  • 1862 – upper case, lower case.[2]
  • 1915 – verb, to examine a place before robbing it.[3][2]

Modern meaning

Noun

  1. An instance or example of something: a case of mistaken identity.
  2. An occurrence of a disease or injury.
  3. A situation or set of circumstances: in that case.
  4. The actual state of affairs: that is not the case.
  5. A matter under investigation by the police.
  6. A lawsuit; the facts and arguments offered for one side.
  7. A set of arguments in support of something: the case for reform.
  8. A person treated by a doctor or social worker.
  9. (grammar) A form of a noun, pronoun or adjective showing its relation to other words.
  10. A container or protective covering: a pencil case.
  11. A box with its contents: a case of wine.
  12. (printing) A tray with compartments for type.

Verb

  1. To put in or cover with a case.
  2. (slang) To inspect (a place) in preparation for a robbery.

Word family

  • caseless
  • best-case
  • casebook
  • caseload
  • casework
  • caseworker
  • encase
  • casual
  • accident
  • capsule
  • cash
  • chase
  • casement

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 x Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  3. ^ a b c d e f g h i Barnhart, Robert K., ed. (1995), The Barnhart Concise Dictionary of Etymology, New York: HarperCollins
  4. ^ Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  5. ^ The American Heritage Dictionary of the English Language (2000), 4th ed., Boston: Houghton Mifflin
  6. ^ a b Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
  7. ^ Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  8. ^ a b Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
  9. ^ a b c d e Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  10. ^ a b Soanes, Catherine; Stevenson, Angus, eds. (2004), Concise Oxford English Dictionary, 11th ed., Oxford: Oxford University Press
  11. ^ Cresswell, Julia (2021), Oxford Dictionary of Word Origins, 3rd ed., Oxford: Oxford University Press
  12. ^ Weekley, Ernest (1921), An Etymological Dictionary of Modern English, London: John Murray
  13. ^ a b Merriam-Webster's Collegiate Dictionary (2003), 11th ed., Springfield, Mass.: Merriam-Webster
  14. ^ Hendrickson, Robert (2008), The Facts on File Encyclopedia of Word and Phrase Origins, 4th ed., New York: Facts on File

Related etymologies

Cite this entry

“Case.” Etymologically, 14 Oct. 2026, etymologically.com/en/case. Accessed 15 Oct. 2026.

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