What does case mean?
'Case' is a versatile English noun with several distinct but related meanings. Most broadly, it refers to an instance or set of circumstances: 'in this case, we act differently.' In law, it denotes a dispute or criminal matter brought before a court, as in 'the defence rested its case.' It also names a container — a suitcase, bookcase, pencil case — and, in linguistics, the grammatical category marking a noun's role in a sentence, such as nominative or accusative. The word derives from Latin 'casus', meaning 'a falling' (from 'cadere', to fall), which also gives us 'chance' and 'accident'; a case is thus etymologically what 'befalls' someone. Because it appears constantly in legal, medical, academic, and everyday registers, 'case' is among the most frequently used abstract nouns in English, and its fixed phrases — 'in any case', 'just in case', 'a case in point' — are essential idioms.
An instance or set of circumstances; a situation considered as a single unit.
"That may well be the case."
Very common in idiomatic expressions such as 'in any case', 'in that case', and 'as the case may be'.
A legal action or matter brought before a court of law.
"The judge dismissed the case for lack of evidence."
A box, receptacle, or protective covering used to store or transport something.
"She placed the violin back in its case."
(Grammar) A grammatical category indicating the function of a noun or pronoun in a sentence, such as nominative or accusative.
"Latin marks the direct object with the accusative case."
Standard plural; used across all noun senses (legal cases, containers, instances).
"The hospital treated several cases of influenza last week."
The word 'case' traces back to Latin 'cadere', meaning 'to fall' — a 'case' is literally what has befallen you.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of case
'Case' entered Middle English from Old French, ultimately from Latin 'casus', meaning a fall or event, derived from the verb 'cadere' ('to fall'). The same Latin root produced 'chance', 'cadence', and 'casual', all carrying the idea of what happens or falls out by occurrence. The legal sense developed early through Anglo-Norman French usage, while the grammatical sense came via Latin translations of Greek 'ptōsis' ('a falling'), reflecting how noun endings were seen to 'fall away' in inflection.
Related word forms
How case is actually used
'Case' is highly polysemous and register-neutral, appearing in everyday speech ('in that case'), formal legal writing ('the case was dismissed'), medical contexts ('a case of measles'), and grammar. Phrases like 'just in case' are fixed idioms in British & US English alike.
Easily confused with case
Not a standard English word — 'case' is the correct spelling for both the situation/container sense and the legal sense.