Legal Research

Legal Terms Glossary

Legal writing is full of words that mean something very specific. Start with the common terms below, or search for any term you come across in your research.

Commonly Used Legal Terms

Filter by category, or browse the full list.

  • Evidence

    Affidavit

    A written statement of facts that a person swears is true, usually signed in front of a notary or other authorized official.

    Learn More
  • Court Process

    Appeal

    A request asking a higher court to review and change the decision of a lower court.

    Learn More
  • Court Process

    Appellant

    The party who asks a higher court to review a lower court's decision.

    Learn More
  • Court Process

    Appellee

    The party in a case who did not appeal and must respond to the appellant's arguments.

    Learn More
  • Court Process

    Brief

    A written legal document that presents a party's arguments and supporting law to a court.

    Learn More
  • Evidence

    Burden of Proof

    The duty to prove a disputed fact, and the level of certainty required to prove it.

    Learn More
  • Legal Research

    Citation

    A reference that identifies where a legal source, such as a case, statute, or regulation, can be found.

    Learn More
  • Civil Law

    Complaint

    The document that starts a civil lawsuit by describing the plaintiff's claims against the defendant.

    Learn More
  • Criminal Law

    Conviction

    A formal court finding, usually after a trial or guilty plea, that a person is guilty of a crime.

    Learn More
  • Court Process

    Defendant

    The person or organization being sued in a civil case or accused of a crime in a criminal case.

    Learn More
  • Court Process

    Dissent

    A separate opinion written by a judge who disagrees with the majority's decision in a case.

    Learn More
  • Constitutional Law

    Due Process

    The constitutional guarantee that the government must follow fair procedures and respect legal rights before taking away a person's life, liberty, or property.

    Learn More
  • Evidence

    Evidence

    Information presented in court, such as documents, testimony, or physical objects, used to prove or disprove a fact.

    Learn More
  • Court Process

    Exhaustion of Remedies

    A rule that generally requires a person to complete all available steps within an agency or lower process before asking a court to intervene.

    Learn More
  • Constitutional Law

    Habeas Corpus

    A legal action that lets a person challenge the legality of their detention or imprisonment.

    Learn More
  • Legal Research

    Holding

    The court's specific legal ruling on the issue actually decided in a case, which becomes binding precedent.

    Learn More
  • Criminal Law

    Indictment

    A formal written accusation, typically issued by a grand jury, charging a person with a serious crime.

    Learn More
  • Legal Research

    Jurisdiction

    A court's legal authority to hear and decide a particular case.

    Learn More
  • Court Process

    Motion

    A formal written or oral request asking a court to make a ruling or take a specific action.

    Learn More
  • Court Process

    Opinion

    A court's written explanation of its decision and the reasons behind it.

    Learn More
  • Court Process

    Plaintiff

    The person or organization who starts a civil lawsuit.

    Learn More
  • Legal Research

    Precedent

    A previously decided case that guides how courts decide similar cases in the future.

    Learn More
  • Criminal Law

    Probable Cause

    A reasonable basis, grounded in facts, for believing that a crime has been committed or that evidence of a crime exists in a particular place.

    Learn More
  • Legal Research

    Statute

    A written law formally enacted by a legislature.

    Learn More

Frequently Asked Questions

Ready to research with a plan?

Turn what you've learned into a personalized, step-by-step research roadmap.

CaseCompass provides general legal education and research guidance. Laws and procedures may differ by jurisdiction. This information is not legal advice and does not create an attorney-client relationship.