Court words and phrases are the working vocabulary of the legal system, and understanding them is what turns a confusing proceeding into one you can actually follow. This glossary walks through the terms in roughly the order you would meet them: the people in the room, the pre-trial steps, the trial itself, the verdict and sentence, and the appeals that can follow. Read straight through, or jump to the section that matches where your case sits right now.
Who’s Who in the Courtroom
A plaintiff, sometimes called a petitioner, is the person who starts a civil lawsuit by filing a complaint. The defendant, or respondent, is the person being sued or charged with a crime. When someone represents themselves without a lawyer, they are appearing pro se, a Latin phrase meaning “for yourself.” Pro se litigants are held to the same procedural rules as licensed attorneys, which makes self-representation harder than most people expect.1United States District Court for the Western District of Pennsylvania. Pro Se Filing Guide
The judge presides over the courtroom, rules on legal questions, and in some cases decides the outcome entirely. The court clerk, sometimes called a courtroom deputy, manages official paperwork, keeps the court’s calendar, and handles administrative tasks like swearing in witnesses. The bailiff is the uniformed officer responsible for order and safety in the room. The court reporter, or stenographer, creates a verbatim transcript of everything said during proceedings.
Words You’ll Hear Before Trial
Long before a trial date, a set of procedural steps frames the dispute and narrows the issues.
Arraignment, Bail, and Plea Bargains
An arraignment is a criminal defendant’s first formal court appearance. The judge reads the charges, explains the defendant’s rights, and asks for a plea of guilty or not guilty.2United States Department of Justice. Initial Hearing / Arraignment At or shortly after the arraignment, the judge decides whether the defendant will be released before trial and on what terms.
Bail is money or property a defendant puts up as a guarantee they will return for future court dates. If the defendant cannot afford bail, they or a family member may work with a bail bond company to post a bond, an agreement backed by a third party that secures release. The judge sets the bail amount based on factors like the severity of the charges and the risk of flight.
A plea bargain is an agreement between the defendant and the prosecutor. The defendant pleads guilty to some or all of the charges in exchange for a lighter sentence or reduced charges. Most criminal cases are resolved this way rather than going to trial.
Discovery, Depositions, and Subpoenas
Discovery is the formal process where both sides exchange evidence and witness information before trial. The goal is to prevent ambush: each side learns what the other plans to present so they can prepare a response. Discovery tools include written questions (called interrogatories), requests to produce documents, and depositions.
A deposition is sworn, out-of-court testimony where a witness answers questions from attorneys for both sides. A court reporter records the entire session, and the transcript can be used later at trial. Depositions let lawyers size up witnesses and lock in their testimony so it cannot shift later.
A subpoena is a court order compelling a person to appear in court or produce documents. Ignoring one can result in penalties, including being held in contempt of court.
Motions and Service of Process
A motion is a formal request asking the judge to take a specific action. A motion to dismiss asks the court to throw out a case entirely, often because the complaint fails to state a valid legal claim or because the court lacks jurisdiction. A motion for summary judgment argues that the facts are undisputed and the law clearly favors one side, making a full trial unnecessary. Either motion can resolve a case months before trial.
Service of process is the procedure for officially delivering legal documents to the opposing party. Federal rules require that a complaint and summons be delivered in a specific way, and the person who makes the delivery must file proof of service with the court.3Legal Information Institute. Federal Rules of Civil Procedure Rule 4 – Summons Improper service can delay or derail a case.
Statute of Limitations
A statute of limitations is the deadline for filing a lawsuit or bringing criminal charges. The clock usually starts running from the date of the injury or the date the harm was discovered. Miss the deadline, and the claim is barred regardless of its merits. These time limits vary widely by the type of case and by jurisdiction.
How a Jury Gets Picked
Before a trial with a jury begins, both sides help choose who will sit in the box through a process called voir dire (pronounced “vwahr deer”). The judge and attorneys question potential jurors to uncover biases or connections to the case that could affect their impartiality.4United States Courts. Juror Selection Process
Attorneys can remove prospective jurors in two ways. A challenge for cause argues that a specific juror cannot be fair, perhaps because they know one of the parties or have expressed a strong opinion about the case. There is no limit on challenges for cause, but the judge decides whether each one is justified. A peremptory challenge lets an attorney strike a juror without giving any reason, though each side gets only a limited number of these.5United States District Court for the Southern District of New York. The Voir Dire Examination
What Happens During Trial
Not every trial involves a jury. In a bench trial, the judge alone hears the evidence and delivers the verdict. Bench trials tend to move faster and work well when the issues are technically complex or when both sides prefer a decision based strictly on the law. In a jury trial, the jury decides the facts while the judge rules on legal questions and instructs the jury on which laws apply.6United States Courts. Types of Juries
Presenting the Case
Trials open with opening statements, where each attorney previews the evidence and outlines the story they expect the facts to tell. Opening statements are not arguments; attorneys are not supposed to editorialize or draw legal conclusions at this stage.7United States Courts. Differences Between Opening Statements and Closing Arguments
During direct examination, an attorney questions their own witness to build their side of the story, typically using open-ended questions that let the witness do most of the talking. The opposing attorney then conducts a cross-examination, probing for inconsistencies, challenging credibility, or highlighting facts the witness left out.
If an attorney believes a question or answer violates court rules, they raise an objection. The judge responds with one of two words: sustained, meaning the objection is valid and the evidence is excluded, or overruled, meaning the objection fails and the witness must answer. One of the most common objections is hearsay, which targets testimony where a witness repeats an out-of-court statement to prove that the statement is true. The Federal Rules of Evidence define hearsay and lay out a web of exceptions where such statements are allowed anyway.8United States Courts. Federal Rules of Evidence
Physical items or documents introduced as proof are called exhibits and are assigned numbers or letters for the record. When technical or scientific knowledge is needed, the court may hear from an expert witness, someone with specialized qualifications who can explain complex subjects to the jury in a way that ordinary witnesses cannot.
Procedural Events During Trial
A recess is a temporary pause called by the judge for breaks, administrative matters, or legal issues that must be handled outside the jury’s presence. If a sensitive legal question comes up that the jury should not hear, attorneys may request a sidebar, a brief, quiet conversation at the judge’s bench.
When an attorney has presented all their witnesses and evidence, they announce they are resting their case. After both sides rest, they deliver closing arguments, the final chance to connect the evidence to the law and persuade the jury. Unlike opening statements, closing arguments are explicitly persuasive: attorneys can draw conclusions, highlight weaknesses in the opposing case, and urge the jury toward a particular verdict.
A mistrial is declared when something goes so wrong that the trial cannot continue fairly. Common causes include a deadlocked jury that cannot reach a verdict, juror misconduct, or highly prejudicial errors that instructions to the jury cannot fix. When a mistrial is declared, the case may be tried again from scratch with a new jury.
How Sure Does the Court Have to Be
Every case has a standard of proof that tells the jury or judge how convinced they need to be before ruling for one side. Getting this wrong is one of the fastest ways to misunderstand a verdict.
- Preponderance of the evidence is the lowest standard, used in most civil cases. The plaintiff needs to show that their version of events is more likely true than not, essentially anything above a 50-50 split.
- Clear and convincing evidence is a middle standard used in specific civil matters like fraud claims, will contests, and decisions about withdrawing life support. The evidence must be substantially more likely to be true than untrue.9Legal Information Institute. Clear and Convincing Evidence
- Beyond a reasonable doubt is the highest standard, reserved for criminal cases. The prosecution must present evidence so strong that a reasonable person would have no logical explanation for the defendant’s innocence. It does not require absolute certainty, but it comes close.
The standard of proof explains why someone can be found “not liable” in a civil wrongful death suit but “not guilty” in a related criminal case, or vice versa. The two cases ask different questions measured against different bars.
How Cases End
A verdict is the jury’s formal decision on the questions put to them: guilty or not guilty in a criminal case, liable or not liable in a civil one. After the verdict, the judge enters a judgment, the official court order spelling out the outcome and any obligations, such as damages the losing side must pay. In family law and certain other civil matters, this final order may be called a decree.
If a judge ends a case before verdict, they dismiss it. A dismissal with prejudice is permanent; the plaintiff can never bring that same claim again. A dismissal without prejudice leaves the door open to refile after correcting whatever caused the dismissal, though the plaintiff will need to pay new filing fees and meet any remaining deadlines.
An acquittal occurs when a criminal defendant is found not guilty, either by a jury verdict or by a judge’s ruling that the prosecution failed to present enough evidence. An acquittal triggers double jeopardy protections, meaning the government cannot retry the defendant for the same offense.
Sentencing Words
After a guilty verdict or plea in a criminal case, the judge imposes a sentence. A few terms come up repeatedly at this stage.
- Probation is a sentence served in the community instead of behind bars. The judge sets conditions such as regular check-ins with a probation officer, drug testing, or community service. Violating those conditions can result in jail time.
- Parole is early release from prison after serving a portion of a sentence. Unlike probation, parole is not an alternative to incarceration; it is a privilege granted after time has already been served.
- Restitution is a court order requiring the convicted person to reimburse victims for financial losses caused by the crime, including medical expenses, lost income, property damage, and funeral costs.10United States Department of Justice. Restitution Process
Injunctions
An injunction is a court order that directs someone to do something or stop doing something. Courts issue three types. A temporary restraining order is an emergency measure, sometimes granted without notifying the other side, that preserves the situation until the court can hold a fuller hearing. A preliminary injunction maintains the status quo while the case is pending, issued only after both sides have been heard. A permanent injunction is typically part of the final judgment after trial and can last indefinitely.
Appealing the Outcome
Losing a case does not always mean the fight is over. The losing party, now called the appellant or petitioner, can ask a higher court to review the decision for legal errors. The winning party, now the appellee or respondent, defends the original outcome. Appeals courts do not retry the facts or hear new evidence; they examine whether the lower court applied the law correctly.
If the appeals court finds a significant error, it may reverse the lower court’s decision outright or remand the case, sending it back to the lower court for a new trial or further proceedings consistent with the higher court’s ruling. If no error is found, the appeals court affirms the original decision.
A party who loses at the appeals court level can petition the U.S. Supreme Court by filing a writ of certiorari, a request that the Supreme Court order the lower court to send up the case record for review. The Court accepts only a small fraction of these petitions. At least four of the nine justices must vote to hear a case, and they generally look for disputes involving national significance or conflicting rulings among lower courts.11United States Courts. Supreme Court Procedures
A writ of habeas corpus is a separate tool that lets someone in custody challenge the legality of their detention. Federal judges regularly receive habeas petitions from state and federal prisoners who argue their prosecution or imprisonment violated their constitutional rights.12United States Courts. Habeas Corpus
Settling Without a Trial
Not every legal dispute ends up in a courtroom. Alternative dispute resolution (ADR) refers to methods of resolving conflicts outside traditional litigation, and courts increasingly encourage or require parties to try ADR before proceeding to trial.
Mediation involves a neutral third party, the mediator, who helps both sides negotiate a resolution. The mediator has no power to impose a decision; any agreement must be voluntary. Because of this, mediation tends to be less expensive and more flexible than a courtroom battle.
Arbitration is more structured and resembles a simplified trial. An arbitrator hears evidence and arguments from both sides, then issues a decision. In binding arbitration, that decision is final and legally enforceable, with no right to appeal. In non-binding arbitration, either side can reject the outcome and proceed to litigation. Many employment and consumer contracts contain mandatory arbitration clauses, meaning the parties agreed in advance to skip court entirely.
When a dispute is resolved through ADR or negotiation, the parties typically sign a settlement agreement that includes a release of claims. By signing, one or both sides give up the right to sue over the same dispute in the future. Once that release is signed and any agreed-upon payment is made, the matter is closed.
Concepts That Cut Across Cases
Stare decisis is the principle that courts follow the rulings of previous courts when deciding similar issues. When a higher court has already ruled on a legal question, lower courts in the same jurisdiction are generally bound by that decision. This doctrine is what gives court rulings their lasting power and makes legal outcomes at least somewhat predictable.
Attorney-client privilege protects confidential communications between a lawyer and their client when the client is seeking legal advice. The privilege belongs to the client, not the attorney, meaning only the client can choose to waive it. There are exceptions. The privilege does not cover communications made to plan or carry out a crime or fraud, and it can be lost if a third party who is not essential to the legal relationship is present during the conversation.
Contempt of court is a finding that someone has disobeyed a court order or disrupted court proceedings. Criminal contempt punishes past behavior, such as insulting the judge or refusing to comply with an order. Civil contempt is forward-looking, designed to pressure someone into complying with a court order, like producing required documents or paying court-ordered support. Penalties can include fines and jail time, and the distinction between the two types matters because it determines what the person must do to resolve the situation.