Explanation
Inflection changes the form of a word to express grammatical features or relations without thereby creating a new lexeme. In “walk – walks – walked”, the lexeme WALK remains identifiable while person or tense changes. Nouns and adjectives may mark case, number, gender, or agreement. The features expressed inflectionally vary considerably across languages: some bundle several kinds of information in one ending, while others use independent words or fixed order. Inflection thus makes grammatical relations visible on the word body and demonstrates that languages can distribute the same communicative task across very different formal resources.
Movement of thought
1. A lexeme enters a particular sentence and grammatical relation. 2. The language selects features required by that environment. 3. Stem change or affix makes those features visible on the word form. 4. Other constituents may answer through agreement. 5. Returning to the lexeme reveals identity across changing grammatical shapes.
Scientific use case
Morphologically annotated corpora can compare paradigms, syncretism, irregular forms, and agreement errors. Cross-linguistic analysis shows which features are inflected on words, expressed analytically, or left for contextual inference.
Example
In a richly inflecting language, determiner and adjective may jointly mark the number and case of a noun; their forms answer one another and expose syntactic cohesion.
Counterexample
“Teach – teacher” or comparable pairs create new lexemes and therefore involve derivation rather than simple inflection. An unchanged word may also carry grammatical function even when no overt inflection is present.
Distinction
Distinguish inflection from derivation, compounding, and cliticisation. Derivation typically creates new lexemes, compounding joins lexical stems, and clitics combine independent grammatical function with phonological dependence; inflection realises members of a paradigm.
Effect on thought and perception
Inflection visibly binds words to time, participants, and syntactic relations without surrendering lexical identity.
Resonance
The word body changes in response to its grammatical environment, while related forms keep the shared lexeme perceptible.
Cite this entry
Reich, Michael (Hrsg./ed.): „Inflection“. Atlas der Sprache, AT-088-008. ATLAS 260, data model 1.6.0. https://atlasoflanguage.com/concept/AT-088-008The address remains stable; editorial content may evolve. Editorial reading state: 2026-10-15. Include your access date for precise references.
Historical background
Sapir’s 1921 discussion challenges the assumption that inflection can be identified with the visible fusion of a stem and an ending. He distinguishes how elements combine from what kinds of grammatical relation they express. Adding an affix is not sufficient to identify inflection, and internal changes in a stem are not automatically its highest or purest form. The argument responds to classifications that treated familiar classical languages as an ideal toward which other languages were supposedly moving. Sapir rejects that ranking, while proposing his own analytical distinctions. For the Atlas, this is a useful historical warning against reading grammatical categories directly from surface appearance or cultural prestige. It does not mean that his category boundaries coincide exactly with the contemporary distinction between inflection and derivation. Nor does it date the English borrowing of inflection. The inspected source supplies an explicit stage in the debate over the concept, leaving the older learned vocabulary and later theories to further research.
How conceptual history changes the analysis
Visible fusion alone does not determine inflection.
References for the historical section
- Edward Sapir, Language: An Introduction to the Study of Speech (1921) · Chapter VI, critique of inflective classifications; contrast between affixing, fusion and relational function
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.