Definition
In legal usage, *swift* describes a witness who is overly eager or hasty in answering questions during examination — one who responds before questions are fully posed, volunteers information beyond what is asked, or otherwise displays an anxious readiness to testify that may signal partiality toward the party who called them. The term is evaluative rather than neutral: a swift witness is not simply a quick thinker but one whose manner of testifying raises questions about objectivity or coaching.
---
Common Language
Modern common usage (Wiktionary): Fast; quick; rapid. Capable of moving at high speeds.
Historical common usage (Webster's 1913): Moving a great distance in a short time; moving with celerity or velocity; fleet; rapid; quick; speedy; prompt.
The gap here is significant. In ordinary English, *swift* is purely descriptive of physical speed or temporal quickness, carrying no evaluative weight. In legal usage, the term is not about speed at all in any straightforward sense — it is a term of art describing a behavioral trait in a witness that implies potential bias. A *swift* witness is not admired for efficiency; the quickness is suspicious.
---
Common Confusion
*Swift* in this legal sense should not be confused with mere confidence or articulateness in a witness. A witness who answers clearly and promptly because they have genuine firsthand knowledge is not *swift* in the legal sense. The defining characteristic is over-readiness — answering before fully hearing the question, anticipating the examiner's direction, or showing zeal for the calling party's case through the very manner of response. The term belongs to witness-credibility analysis, not witness competence.
---
Why It Matters in Research
This is a narrow term of art that appears almost exclusively in older treatises and practice guides on the examination of witnesses. Researchers working in the Law Mind corpus should note several traps:
**Historical sources are sparse.** Anderson's is among the few legal dictionaries to define *swift* as a legal term. Most other standard references treat it only in its ordinary English sense. A researcher who encounters the term in a nineteenth-century trial record or advocacy manual without consulting a period-appropriate legal dictionary may miss the evaluative dimension entirely.
**Cross-reference to EXAMINATION is essential.** Anderson's own entry points to EXAMINATION, § 9, indicating that *swift* is properly understood within a larger framework of how witnesses were categorized and challenged during examination. That framework — distinguishing willing, reluctant, hostile, and zealous witnesses — provides the analytical context in which *swift* has meaning. The term is not free-standing.
**The concept persists without the vocabulary.** Modern courts and commentators no longer use *swift* as a term of art, but the underlying credibility concern — that a witness's eagerness to please the calling party is itself impeachment material — remains live. It surfaces in modern practice under the vocabulary of bias, interest, and the mechanics of impeachment by showing a witness's relationship to the calling party. Researchers tracing the historical doctrine of witness partiality should treat *swift* as a period marker that connects to ongoing evidentiary principles.
**Advocacy literature vs. evidence doctrine.** The term appears more in practice-oriented advocacy literature than in judicial opinions or codified evidence rules. This affects where in the corpus it will surface and may explain its absence from many standard legal dictionaries.
---
Historical Dictionary Support
Anderson's Dictionary of Law provides the only significant legal dictionary treatment located in the source shelf. Anderson defines a swift witness as one who is "overready to answer, betraying, possibly, partiality for the side by which he is called; a zealous or over-zealous witness." The hedged language — "possibly" — is notable: Anderson does not treat swiftness as conclusive proof of bias, only as a behavioral signal warranting attention.
No other historical dictionary in the Law Mind shelf provides a competing or complementary legal definition. The absence of the term from Bouvier, Black, and similar standard references reinforces that this was always a relatively specialized piece of vocabulary, more at home in treatises on evidence and advocacy than in general legal dictionaries.
The Webster's 1913 entry confirms the ordinary-language baseline and makes clear that any reader encountering the legal meaning without context would have no reason to suspect the evaluative connotation.
---
Encyclopedia Cross-Reference
See: EXAMINATION (Witness Testimony) — for the broader framework of witness categorization during examination, within which the concept of a swift witness has its natural home.
---