A defendant is the person, business, or organization that a lawsuit or criminal charge is brought against. That is the short version of the defendant definition, and it holds in both types of cases you’re likely to encounter: in a civil case, the defendant responds to claims filed by a private party called the plaintiff; in a criminal case, the defendant answers charges filed by the government. The label attaches when the case begins and stays with the person until the matter ends by trial, dismissal, settlement, or plea.
Civil Defendant vs. Criminal Defendant
The word means the same thing in both settings, but almost everything else differs.
A civil defendant is being sued by a private party. The plaintiff is usually asking for money or a court order rather than punishment. Typical civil claims involve broken contracts, personal injuries, property damage, or unpaid debts. A civil defendant does not face jail time and does not end up with a criminal record from the case.
The plaintiff has to prove the claim by a “preponderance of the evidence,” meaning it’s more likely than not that the defendant is responsible. If the evidence tips even slightly toward the plaintiff, the defendant can be held liable. When a civil defendant loses, the court can order compensatory damages for actual losses, punitive damages where the law allows them, or an injunction requiring the defendant to do or stop doing something.1United States Courts. Covering Civil Cases – Journalist’s Guide
A criminal defendant is being prosecuted by the government, either federal or state. The consequences are steeper: fines, probation, or imprisonment, depending on whether the offense is a misdemeanor or felony, plus a criminal record. Because the stakes are higher, the prosecution has to meet the highest standard of proof in the legal system: beyond a reasonable doubt. Jurors must be firmly convinced of guilt. Showing that guilt is probable is not enough.2Ninth Circuit District and Bankruptcy Courts. 3.5 Reasonable Doubt Defined
When You’ll Hear “Respondent” Instead
Courts use “respondent” rather than “defendant” in certain settings: appeals (where the party who won below is the respondent), many family law petitions, and administrative hearings. If you’re responding to a petition rather than a complaint, or defending a lower court win on appeal, expect the respondent label. The role is similar, but the terminology signals a different type of proceeding.
Constitutional Rights of a Criminal Defendant
The Constitution builds several protections around criminal defendants because the government holds far more power than any individual person. These rights apply in both federal and state prosecutions.
The Fifth Amendment protects against forced self-incrimination. A defendant cannot be compelled to testify against themselves in a criminal case, which is the basis for the familiar right to remain silent.3Congress.gov. US Constitution – Fifth Amendment
The Sixth Amendment bundles several rights together:
- A speedy and public trial, so the government cannot hold charges indefinitely or proceed in secret.
- An impartial jury drawn from the community where the crime occurred.
- Notice of the specific charges filed.
- The right to confront and cross-examine witnesses testifying against the defendant.
- The assistance of counsel.
These guarantees apply to state prosecutions as well as federal ones.4Congress.gov. US Constitution – Sixth Amendment
Federal courts must also provide a qualified interpreter for any defendant whose primary language is not English, or who has a hearing impairment that would interfere with understanding the proceedings or communicating with counsel. The court can act on its own or at a party’s request.5Office of the Law Revision Counsel. 28 USC 1827
Court-Appointed Attorneys and Self-Representation
A criminal defendant who cannot afford a lawyer has a right to have one appointed. Under federal law, anyone charged with a felony or serious misdemeanor who is financially unable to hire counsel must be offered a court-appointed attorney. The court looks at income, assets, and living expenses, and resolves any doubt about eligibility in the defendant’s favor.6Office of the Law Revision Counsel. 18 USC 3006A
A defendant can also choose to represent themselves, called proceeding pro se. Judges don’t accept that decision lightly. Before allowing it, the court must warn the defendant about the dangers and disadvantages of going without a lawyer, and the waiver of counsel must be knowing and voluntary.7Justia Law. Faretta v California 422 US 806 (1975)
Self-representation comes with a catch that trips people up. A pro se defendant is held to the same procedural standards as a licensed attorney. Rules of evidence still apply. Deadlines still count. Documents must still be formatted correctly. And a defendant who loses cannot later claim that their own poor lawyering amounted to a denial of effective counsel.7Justia Law. Faretta v California 422 US 806 (1975)
What a Defendant Has to Do
Being named as a defendant starts a clock, and missing the deadline has real consequences.
In federal civil court, a defendant served with a summons and complaint generally has 21 days to file a written response called an answer. If the defendant waived formal service, that window stretches to 60 days, or 90 days if the defendant is outside the United States.8Legal Information Institute. Federal Rules of Civil Procedure Rule 12 – Defenses and Objections
A defendant who ignores the case risks a default judgment. The clerk can enter the defendant’s default, and if the plaintiff’s claim is for a specific dollar amount, the clerk can enter judgment for the full amount plus costs without the defendant ever being heard. For disputed amounts, the court itself enters the default judgment after a hearing.9Legal Information Institute. Federal Rules of Civil Procedure Rule 55 – Default and Default Judgment People often assume that ignoring a lawsuit means nothing happens. In reality, the plaintiff can walk away with everything they asked for.
Criminal defendants have a different obligation: showing up. A criminal defendant must be present at every major stage of the case, including the initial appearance, arraignment, plea, trial, and sentencing.10Legal Information Institute. Federal Rules of Criminal Procedure Rule 43 – Defendants Presence Failing to appear is itself a federal crime, with penalties that scale to the underlying charge: up to one year of additional imprisonment for a misdemeanor, and up to five or ten years for serious felonies, added on top of any sentence for the original offense.11Office of the Law Revision Counsel. 18 USC 3146 – Penalty for Failure to Appear
Civil defendants also carry an evidence-preservation duty. Once a defendant knows or should know that litigation is likely, routine deletion of relevant documents, emails, or electronic files has to stop. Deliberately destroying evidence can lead the court to instruct the jury to assume the missing material was unfavorable, or in serious cases, to enter judgment against the party who destroyed it.
How a Defendant Fights Back
A defendant is not limited to denying the other side’s allegations. Two broader tools are available: affirmative defenses and, in civil cases, counterclaims.
An affirmative defense says that even if the plaintiff’s or prosecutor’s allegations are true, the defendant is still not liable or guilty because of additional facts. The defendant carries the burden of proving these defenses. In civil cases, common affirmative defenses include the statute of limitations, contributory negligence, and consent. In criminal cases, they include self-defense, duress, entrapment, and insanity. The exact list and how each is classified vary by jurisdiction.
A civil defendant can also file a counterclaim against the plaintiff. Federal rules distinguish two types. A compulsory counterclaim arises from the same dispute the plaintiff sued over; if the defendant does not raise it in the current case, the claim is lost for good. A permissive counterclaim involves a different transaction and can either be raised now or saved for a separate lawsuit. Which category applies matters, because a missed compulsory counterclaim cannot be revived later.
What Happens If a Defendant Loses
A civil defendant who loses at trial does not necessarily write a check the next day. If the defendant does not pay voluntarily, the plaintiff becomes a judgment creditor and can use legal tools to collect. In federal court, a money judgment is enforced through a writ of execution, and the specific collection procedures generally follow the rules of the state where the court sits.12Legal Information Institute. Federal Rules of Civil Procedure Rule 69 – Execution Common methods include garnishing wages or bank accounts, placing liens on real property, and seizing personal assets. Judgment creditors can also use discovery tools to locate assets, and these collection efforts can continue for years.
A criminal defendant who is convicted faces whatever sentence the judge imposes: fines, restitution to victims, probation, community service, or incarceration. A conviction also creates a criminal record that can affect employment, housing, and other parts of life long after the sentence is served. Both civil and criminal defendants generally have the right to appeal, though the grounds and the odds of success depend on the facts and legal issues in the particular case.