Explanation
Underspecification occurs when a linguistic meaning or analytical representation leaves certain information open. This differs from multiple distinct readings and from blurred category boundaries. An utterance may mention a person without specifying age; each possible age need not constitute a separate lexical meaning. In relation to sorites, the concept primarily offers a contrast: the vague boundary of “heap” is not simply identical to omitted information. An analyst's lack of knowledge also does not establish underspecification in the linguistic form itself.
Movement of thought
1. Identify the representation. 2. State what remains open. 3. Examine contextual completion. 4. Test for distinct readings. 5. Investigate vagueness separately.
Scientific use case
Semantic modelling can record which information composition supplies and which is added later.
Example
“Someone is waiting outside” does not specify the person's age; this need not constitute ambiguity in someone.
Counterexample
Uncertainty about how many grains make a heap differs from leaving an exact quantity unstated.
Distinction
Distinguish underspecification from vagueness, ambiguity and the analyst's lack of knowledge.
Effect on thought and perception
Underspecification permits openness without necessarily multiplying meanings.
Resonance
An expression can say enough without settling everything.
Provenance
Parallel corpus 98f0950771ae4662f291d2f15f5c51b6797f3c20ba458a68615cdb177002ea18; case-bounded source review accepted; human specialist review not claimed.
Cite this entry
Reich, Michael (Hrsg./ed.): „Underspecification“. Atlas der Sprache, AT-NAV-G05-033. ATLAS 259, data model 1.6.0. https://atlasoflanguage.com/concept/AT-NAV-G05-033The address remains stable; editorial content may evolve. Editorial reading state: 2026-10-15. Include your access date for precise references.