Explanation
Case is a grammatical category that formally marks nominal expressions and helps organise their syntactic and semantic relations. Marking may appear on nouns, articles, adjectives, or pronouns, or be distributed across several elements. Labels such as nominative, accusative, or instrumental are not universally identical boxes of meaning: languages group roles, direction, possession, and accompaniment differently. Case therefore does not map meaning one-to-one. The same semantic role may receive different forms, and one form may perform several functions. The concept reveals how language inscribes relations into the shape of nominal expressions, providing orientation while retaining historical layering, syncretism, and construction-specific variation.
Movement of thought
1. An event or state first brings together several nominal participants in differing syntactic and semantic relations. 2. The language marks selected relations through forms on nouns, associated words, or pronouns and pre-structures possible readings. 3. Hearers integrate form, verb, word order, and context to infer roles such as actor, affected entity, possessor, or instrument. 4. A counter-test asks whether a form truly marks case and resists equating a case label directly with one semantic role. 5. The utterance returns as a relational configuration whose grammatical markings guide orientation without determining interpretation completely.
Scientific use case
Morphology, syntax, and typology compare paradigms, agreement, syncretism, and case functions. Corpora and acceptability data reveal construction-dependent variation beyond idealised examples.
Example
In “Lea opens the door with the key,” the marked phrase denotes an instrument; a comparable form in another context might express accompaniment and requires the verb and situation.
Counterexample
An expression that denotes the actor is not automatically nominative in every language or construction. Semantic role and morphological case must be established separately.
Distinction
Distinguish case from semantic role, grammatical relation, adposition, agreement, and word order. Case is a formal grammatical categorisation whose functions emerge through interaction among levels.
Effect on thought and perception
Case makes relations compactly recognisable, can permit flexible ordering of nominals, and gathers syntactic and semantic cues into language-specific formal patterns.
Resonance
Small changes of form make the relational image of a sentence sound differently; a nominal expression answers both the verb and the other participants.
Etymology
Technical core term; individual etymological review pending
Provenance
Unresolved relation network → core-concept review → Metzler/HWRh cross-check → ATLAS 238
Cite this entry
Reich, Michael (Hrsg./ed.): „Case“. Atlas der Sprache, AT-CORE-238-042. ATLAS 260, data model 1.6.0. https://atlasoflanguage.com/concept/AT-CORE-238-042The address remains stable; editorial content may evolve. Editorial reading state: 2026-10-15. Include your access date for precise references.
Historical background
In Sapir’s 1921 analysis, the relations between participants must be distinguished from the particular forms used to express them. His comparison of English and Latin shows that an ending, an ordering pattern and agreement can contribute differently to making a sentence interpretable. He even explains in a note that his use of case includes more than the subject–object relation in the immediate argument. That qualification matters historically: an author’s analytical scope cannot be assumed to match a later textbook definition. The Atlas’s case profile should therefore distinguish semantic participant roles, syntactic relations and morphological marking, even when one language links them closely. Sapir’s treatment is a witness to the effort to compare these dimensions across languages, not proof that every relation has a dedicated case form. The older English and classical histories of the name case remain a separate task; the 1921 analysis alone cannot supply that borrowing chain or its earliest grammatical attestations.
How conceptual history changes the analysis
Separate participant role, sentence relation and formal marking before equating cases.
References for the historical section
- Edward Sapir, Language: An Introduction to the Study of Speech (1921) · Chapter V, farmer–duckling comparison, Latin agreement and the note on case
Original English text read in the Gutenberg transcription. No first-coinage claim, full-book verification or automatic endorsement of the author’s 1921 language classifications and generalisations. Examples require modern descriptive checking before reuse as current language data.