Explanation
An occasional formation is a newly created expression produced for a particular situation or limited communicative need without yet belonging to the established lexicon. Speakers can use productive patterns to coin an immediately interpretable label such as “umbrella-forgetter.” Only its later history determines whether it remains a one-off, recurs locally, or becomes lexicalised. The concept therefore describes a stage in a trajectory rather than necessarily a special morphological type. It overlaps with nonce word and ad hoc formation, but must be separated from slips, quotations of old rare words, and already circulating neologisms. It reveals how language provisionally closes naming gaps in action and thereby tests possible words.
Movement of thought
1. A particular situation first creates a naming need for which no readily available established expression seems sufficiently apt. 2. The speaker combines familiar linguistic material through a productive pattern into a new form whose context supports interpretation. 3. Addressees reconstruct the intended meaning from structure and situation even if they have never encountered the expression before. 4. A counter-test checks earlier attestations, formation pattern, and usage history and separates occasional formation from error, borrowing, and established neologism. 5. The situational word may disappear, survive within a group, or enter wider vocabulary; repetition alone determines its later status.
Scientific use case
Morphology, lexicology, and corpus linguistics investigate first attestations, productivity, contextual interpretability, and later recurrence. Time-bounded searches prevent an established form from being retrospectively labelled a one-off coinage.
Example
While tidying a room, someone calls the chair on which reusable clothes accumulate the “wear-again chair”; everyone infers its local function without explanation.
Counterexample
If a speaker first encounters and uses an established but personally unfamiliar word, no occasional formation has thereby occurred; novelty to an individual is not historical word creation.
Distinction
Distinguish it, according to terminological tradition, from ad hoc formation and nonce word, neologism as a socially circulating innovation, speech error, wordplay, blending, and spontaneous borrowing.
Effect on thought and perception
Occasional formations close local naming gaps, condense situational evaluations, and demonstrate the rule-governed yet inventive expansion of vocabulary.
Resonance
A momentary need draws familiar pieces of language together; the new word flashes into view and waits to learn whether another voice will take it up.
Cite this entry
Reich, Michael (Hrsg./ed.): „Occasional formation“. Atlas der Sprache, AT-DEP1-0007. ATLAS 260, data model 1.6.0. https://atlasoflanguage.com/concept/AT-DEP1-0007The address remains stable; editorial content may evolve. Editorial reading state: 2026-10-15. Include your access date for precise references.
Historical background
The Cours separates the creation of an analogically possible form from its adoption into a community’s language. A speaker can construct an intelligible novelty using available patterns even when that novelty never becomes established vocabulary. This distinction provides a historical foundation for occasional formation: a single successful use and a durable lexical item are different outcomes. The examples also show why children’s innovations are not simply random failures of memory. They can reveal the pattern the speaker has extracted. For the Atlas, a new expression should therefore be tested for interpretability, local purpose and later conventionalisation separately. The passage does not attest occasional formation as an English label, and it does not license assuming that every possible formation is equally acceptable in every setting.
How conceptual history changes the analysis
Separate interpretability, local purpose and later adoption. A successful one-off expression does not automatically become established vocabulary.
References for the historical section
- Ferdinand de Saussure, Cours de linguistique générale (1916), edited by Bally and Sechehaye with Riedlinger; 1971 Payot printing, Wikisource transcription · Part III, IV §3 and V §1: innovation, indécorable and non-adopted formations
Selected passage, not a complete genealogy or an English first-attestation claim. Original Atlas applications are editorial interpretations, not reported experiments. The Cours is a posthumous editorial reconstruction; French technical vocabulary is not an English attestation. Its historical phonology and classifications are not automatically current consensus.
- Ferdinand de Saussure, Cours de linguistique générale (1916), edited by Bally and Sechehaye with Riedlinger; 1971 Payot printing, Wikisource transcription · Part III, IV §3 and V §1: innovation, indécorable and non-adopted formations
Selected passage, not a complete genealogy or an English first-attestation claim. Original Atlas applications are editorial interpretations, not reported experiments. The Cours is a posthumous editorial reconstruction; French technical vocabulary is not an English attestation. Its historical phonology and classifications are not automatically current consensus.