Definition
Voir dire is a preliminary examination conducted by a court, and in modern American practice also by counsel, to determine the competency, qualifications, or impartiality of a person before that person is allowed to serve in an official capacity — most commonly as a juror or as a witness. The phrase derives from Law French meaning "to speak the truth."
The term carries three distinct operational meanings depending on context:
1. Jury selection voir dire. The process by which prospective jurors (the venire) are questioned by the judge, attorneys, or both to uncover bias, conflicts of interest, or disqualifying relationships. This is the dominant modern usage in American practice. The examination results in challenges for cause (unlimited, but must be justified) and peremptory challenges (limited in number, exercised without stated reason, but subject to constitutional anti-discrimination constraints).
2. Witness competency voir dire. A preliminary examination of a proposed witness — conducted outside the hearing of the jury when necessary — to determine whether the witness is legally competent to testify. This examination may address a witness's interest in the outcome, capacity to understand the oath, expertise in a claimed field, or the admissibility of specific testimony.
3. Evidentiary admissibility voir dire. A mini-hearing, typically outside the jury's presence, used to determine whether a specific item of evidence — a confession, an expert opinion, an out-of-court identification — meets the threshold for admissibility. Common in criminal practice in the United States and is the primary meaning of the term in England and Wales, Australia, and New Zealand.
Common Language
Modern common usage (Wiktionary): The preliminary phase of a jury trial in which jurors are examined and selected; also, a preliminary hearing to determine admissibility of evidence.
Historical common usage (Webster's 1913): An oath administered to a witness before being sworn in chief, requiring truthful answers to questions about competency to give evidence.
The common and legal uses of this term have co-evolved closely enough that the gap is narrow for modern readers — but direction of meaning matters. Webster's 1913 defines voir dire almost entirely as a witness-competency procedure. Today, when most people (and many lawyers) say "voir dire," they mean jury selection. A researcher relying on Webster's 1913 or older sources will encounter the term predominantly in its witness-examination sense, which can create confusion when reading across eras.
Common Confusion
Voir dire (jury selection) is sometimes conflated with the venire, which is the pool of prospective jurors summoned to court. Voir dire is what happens to the venire — the examination process — not the pool itself. Separately, voir dire as an evidentiary hearing is sometimes loosely called a "suppression hearing," but the two are not identical: a suppression hearing specifically targets evidence obtained in violation of constitutional rights, while an evidentiary voir dire is broader and addresses admissibility on any grounds.
Recognized Forms
/SUBTYPES
Individual voir dire: Prospective jurors questioned one at a time, away from the group. Used in high-profile or capital cases to reduce contamination among panel members.
Group voir dire: The venire is questioned collectively, with follow-up for individuals who respond affirmatively. More common in busy trial courts.
Attorney-conducted voir dire: Counsel directly questions prospective jurors. Standard in federal and most state courts; allows more probing examination of bias.
Judge-conducted voir dire: The court asks questions, sometimes supplemented by written juror questionnaires submitted by counsel. Used in some jurisdictions, particularly federal courts where judges limit attorney participation.
Why It Matters in Research
The primary research trap is the era gap. Pre-twentieth-century sources — including both Black's editions in the corpus and Bouvier — treat voir dire almost exclusively as a witness-competency procedure. The modern jury-selection meaning, while not absent from earlier law, becomes dominant in American legal discourse only as jury trial procedure becomes more elaborate and adversarial in the twentieth century. A researcher reading an 1890 case reference to "voir dire" should default to the witness-examination meaning unless context clearly indicates otherwise.
The constitutional overlay is essential for jury-selection research. Batson v. Kentucky (1986) and its progeny impose equal protection limits on peremptory challenges, meaning voir dire in the jury-selection context is now entangled with constitutional doctrine that did not exist when the historical dictionaries were written. Nothing in Black's or Bouvier anticipates Batson. Researchers tracing peremptory challenge doctrine must bridge the historical sources to this constitutional development independently.
Jurisdictional variation in who conducts voir dire — judge versus attorney, and to what depth — is significant and affects how trial records are structured. Federal court records will often show more abbreviated voir dire transcripts than state court records from the same era, because federal judges historically controlled the examination. This affects corpus research into trial transcripts and appellate records that turn on jury selection issues.
The evidentiary voir dire meaning is underrepresented in American historical dictionaries but is operationally important in criminal procedure research, particularly in jurisdictions following English practice. Researchers working on confession admissibility, expert testimony gatekeeping, or child witness competency will encounter voir dire in this sense and should not assume the jury-selection definition applies.
Historical Dictionary Support
Black's first and second editions are in close agreement, differing only in that the second edition adds "or juror" to the witness-competency framing — a small but telling editorial expansion that signals growing awareness of the jury-selection use. Neither edition develops that meaning, and both remain anchored to the preliminary examination of witnesses. Bouvier adds procedural texture: a party may either call another witness to prove a proposed witness's interest, or elect to have the proposed witness sworn on voir dire to answer that question directly. This detail — that the voir dire oath was a device for extracting self-disclosure of interest — is absent from both Black's editions and is a useful precision for researchers working with early trial records.
All three historical sources omit the constitutional dimension entirely, as would be expected given their publication dates. None addresses peremptory challenges, Batson doctrine, or the evidentiary admissibility hearing use that has become prominent in criminal procedure.
Jurisdictional Note
In England and Wales, Australia, and New Zealand, "voir dire" most commonly refers to the evidentiary admissibility hearing (sometimes called a "trial within a trial"), not jury selection. American researchers reading Commonwealth case law should not assume the jury-selection meaning. In the United States, voir dire practice — including whether counsel may ask questions, the scope of inquiry, and the use of juror questionnaires — varies substantially between federal and state courts and among state jurisdictions.
Encyclopedia Cross-Reference
Jury Selection — Voir Dire, Peremptory Challenges, and Batson (The Law Mind Criminal Law Encyclopedia)