(; often ; from an Anglo-Norman phrase meaning "to speak the truth") is a legal phrase for a variety of procedures connected with jury trials. It originally referred to an oath taken by jurors to tell the truth ().

(vwahr [with a near-silent "r"] deer) n. from French "to see to speak," the questioning of prospective jurors by a judge and attorneys in court. Voir dire is used to determine if any juror is biased and/or cannot deal with the issues fairly, or if there is cause not to allow a juror to serve (knowledge of the facts; acquaintanceship with parties, witnesses or attorneys; occupation which might lead to bias; prejudice against the death penalty; or previous experiences such as having been sued in a similar case). Actually one of the unspoken purposes of the voir dire is for the attorneys to get a feel for the personalities and likely views of the people on the jury panel. In some courts the judge asks most of the questions, while in others the lawyers are given substantial latitude and time to ask questions. Some jurors may be dismissed for cause by the judge, and the attorneys may excuse others in "peremptory" challenges without stating any reason. 2) questions asked to determine the competence of an alleged expert witness. 3) any hearing outside the presence of the jury held during trial. See also: expert witness jury peremptory challenge