Syntactic Ambiguity
Definition
Ambiguity arising from the grammatical structure of a sentence rather than from any individual word's meaning. The Oxford comma case is a famous example: the list structure of the sentence created two plausible parsings with different legal consequences. Syntactic analysis can often show which parsing is more strongly supported by the surrounding text.
- Source of ambiguity
- Sentence grammatical structure, not word meaning
- Contrast
- Lexical (word-meaning) ambiguity
- Famous example
- Oxford comma / serial comma list-parsing disputes
- Application
- Forensic linguistic analysis of contracts and statutes
Common questions
How does a forensic linguist support one reading of a syntactically ambiguous clause over another?+
The analyst applies established grammatical tests such as coordination structure, modifier attachment rules, and comparison with parallel clauses elsewhere in the same document, then presents which parsing is more consistent with standard usage and the document's internal drafting conventions.
Why do syntactic ambiguity disputes matter more in statutes and contracts than in casual writing?+
A statute or contract's legal effect can turn entirely on which grammatical reading applies, since the two parsings can produce materially different obligations or exemptions, whereas the same ambiguity in casual speech is usually resolved by context without legal consequence.
Can syntactic analysis alone resolve a genuinely ambiguous clause?+
Not always; when internal grammatical evidence is balanced between readings, courts and linguists often turn to extrinsic evidence such as drafting history, negotiation records, or established interpretive canons rather than syntax alone.
Related terms
- Concordance
- A list of all occurrences of a target word in a corpus, shown in their surrounding context (KWIC: keyword in context). Concordance...
- Corpus Jurisprudence
- The practice of using corpus analysis as evidence in statutory or constitutional interpretation. Associated in the US with Brigham Young University's Law...
- Corpus Linguistics
- The study of language through large, principled collections of texts or transcripts. In forensic work, corpus methods are used to count how...
- New Originalism
- A US constitutional and statutory interpretation theory associated with scholars including Antonin Scalia, Randy Barnett, and Jack Balkin, holding that courts should...
- Ordinary Meaning
- The meaning a reasonable person with ordinary linguistic competence would assign to a word or phrase. It is the default canon of...