Plain-English legal vocabulary

Important Basic Legal Terms

Legal words can feel confusing when they appear in court papers, letters, contracts, notices, agency forms, or online resources. This guide explains important basic legal terms in plain English so you can understand the vocabulary before looking for official help.

Browse legal guides Legal advice vs legal information

How to use this legal terms guide

Use this page as a starting point when you see a legal word you do not understand. The goal is to explain common vocabulary, not to decide what the word means for your exact situation.

A term may have a slightly different meaning in civil court, criminal court, housing court, family court, immigration matters, benefits cases, or agency procedures.

  • Find the word in your document.
  • Read the full paragraph around the word.
  • Check whether a date, deadline, or instruction appears nearby.
  • Use official sources for your court, agency, or state.
  • Ask qualified help if the term affects your rights, money, housing, safety, or deadline.

Foundation terms

Legal information, legal advice, and legal help

These terms are important because they explain what this website can and cannot provide.

Legal information

Legal information explains general legal rules, terms, procedures, public resources, and options. It does not tell a specific person what strategy to use. NCSC explains that legal information may help people understand court rules and steps.

Read legal advice vs legal information

Legal advice

Legal advice applies the law to a specific person’s facts and recommends what that person should do. NCSC describes legal advice as strategy about what someone should do to get the best outcome.

Read legal advice vs legal information

Legal aid

Legal aid usually means free or low-cost legal help for eligible people. Eligibility, case types, and available services vary by organization and location.

Find legal help resources

People and parties

Terms for people involved in a legal matter

Legal documents often identify people by their role. The role names can change depending on the type of case.

Plaintiff

A plaintiff is usually the person, business, or organization that starts a civil lawsuit. The U.S. Attorney glossary describes a complaint as a written statement by the plaintiff stating wrongs allegedly committed by the defendant.

Defendant

A defendant is usually the person, business, or organization being sued or accused in a case. In a civil lawsuit, the defendant is the party responding to the plaintiff’s claims.

Petitioner

A petitioner is a person who asks a court or agency for relief. This word is often used in family, probate, immigration, protective order, benefits, or administrative matters.

Respondent

A respondent is a person who responds to a petition. Some case types use “respondent” instead of “defendant.”

Party

A party is a person, business, agency, or organization involved in a legal case or legal dispute.

Attorney

An attorney is a lawyer licensed to practice law. Attorneys can provide legal advice, represent clients, prepare documents, and explain legal options based on specific facts.

Court paper terms

Common court document terms

These words often appear in court papers. We already created detailed pages for several of them, so links are included only where the page exists.

Summons

A summons is usually a court document that gives formal notice that a case exists and may explain when or how a person must respond or appear.

Read summons basics

Complaint

A complaint is usually a court document that begins a civil lawsuit and explains the claims, facts, and requested action. ABA describes a complaint as a legal document that usually begins a civil lawsuit and states the facts plus the action requested from the court.

Read complaint basics

Answer

An answer is often a defendant’s formal written response to a complaint. It may respond to allegations and include defenses, depending on the court rules.

Read answer basics

Notice

A notice is a written document that informs someone about a legal event, deadline, filing, hearing, decision, or required action.

Notice of hearing

A notice of hearing is a document that usually tells parties about a scheduled court event, including the hearing date, time, location, or remote appearance details.

Read hearing notice basics

Motion

A motion is a request asking the court to make a decision or issue an order on a specific issue. Federal Rule 7 describes a motion as a request for a court order, but federal procedure is not the rule for every court.

Order

An order is a written direction or decision from a court. It may tell parties what they must do, stop doing, pay, file, attend, or prepare.

Judgment

A judgment is often a court’s final decision about a claim or case. It may affect money, rights, property, possession, or enforcement.

Subpoena

A subpoena is a legal document that may require a person to appear, testify, or provide documents. Requirements and consequences vary by court and case type.

Process terms

Common legal process terms

These terms describe steps that may happen in a court, agency, or legal dispute.

Filing

Filing means giving a document to a court or agency in the required way. Some systems use electronic filing; others use paper filing or special submission rules.

Proof of service

Proof of service is a document or record showing that legal papers were delivered. It may identify who served the papers, who received them, and when and how delivery happened.

Read service of process basics

Hearing

A hearing is a court event where a judge or hearing officer may consider an issue, receive information, hear arguments, or make a decision.

Read hearing notice basics

Deadline

A deadline is the last date or time period for taking a required step. Deadlines may depend on rules, service dates, weekends, holidays, court orders, and local procedures.

Default

Default can happen when a party does not respond, appear, or take a required step. The meaning and consequences depend on the case type and court rules.

Continuance

A continuance means a court date or deadline is postponed to a later date. Courts have rules about whether and how continuances may be requested.

Appeal

An appeal is a request for a higher court or review body to review a decision. Appeals usually have strict deadlines and technical rules.

Settlement

Settlement means the parties resolve some or all of a dispute by agreement instead of having the court or agency decide every issue.

Money and remedies

Basic terms about money, remedies, and results

These words often appear in court papers, demand letters, settlement documents, agency decisions, and legal guides.

Damages

Damages usually means money requested or awarded to compensate for a loss, injury, breach, or legal harm.

Relief

Relief means what a person asks a court or agency to do. Relief may include money, an order, possession, a change in status, or another remedy.

Injunction

An injunction is a court order that may require someone to do something or stop doing something.

Fees

Fees may refer to court filing fees, service fees, attorney fees, administrative fees, or other charges connected to a legal process.

Costs

Costs may refer to certain expenses connected to a case, such as filing, service, copying, transcripts, or other court-related costs.

Enforcement

Enforcement means using legal procedures to carry out a judgment, order, agreement, agency decision, or legal obligation.

Non-court legal terms

Not every legal term appears in court. Some appear in contracts, leases, workplace documents, debt letters, benefit notices, and consumer documents.

Contract

A contract is an agreement between people, businesses, or organizations that may create legal rights and obligations.

Lease

A lease is an agreement that usually gives someone the right to use rental property under specific terms, such as rent, length of stay, rules, and responsibilities.

Notice to quit

A notice to quit is a housing-related notice that may tell a tenant to leave, fix a problem, or respond by a certain time. Rules vary by state and local law.

Debt validation notice

A debt validation notice is a collection-related notice that gives information about a debt and the collector. Consumer debt collection rules and deadlines should be checked through official sources.

Pay stub

A pay stub is a wage document that may show hours, pay rate, gross pay, deductions, taxes, and net pay.

Agency notice

An agency notice is a document from a government agency. It may explain a decision, deadline, right to appeal, payment issue, benefit change, complaint result, or required action.

Do not use definitions as instructions

A definition can help you understand a word, but it cannot tell you what to do in your own case. Legal words often depend on context, court rules, document wording, location, and facts.

If a term appears next to a deadline, court date, payment demand, eviction notice, wage issue, identity theft problem, or government decision, verify the meaning through official sources or qualified help.

  • A definition does not calculate your deadline.
  • A definition does not review your documents.
  • A definition does not choose your strategy.
  • A definition does not guarantee what a court will do.
  • A definition does not replace legal aid or attorney advice.

Reliable references

Official and trusted legal glossary resources

Use recognized sources to compare definitions and check how terms are used in official settings.

U.S. Attorney legal glossary

The U.S. Attorney glossary explains many common legal and court terms used in federal legal contexts.

Open U.S. Attorney glossary

American Bar Association glossary

The ABA glossary provides plain-language definitions for many common legal terms.

Open ABA glossary

National Center for State Courts

NCSC explains the difference between legal information and legal advice and supports court user education.

Open NCSC explanation

Common questions

Basic legal terms FAQ

What are basic legal terms?

Basic legal terms are common words used in legal documents, court papers, notices, agreements, agency forms, and legal information. Examples include plaintiff, defendant, complaint, summons, answer, hearing, judgment, appeal, deadline, damages, and relief.

Are legal terms the same everywhere?

No. Many words are widely used, but exact meanings and procedures can vary by state, court, agency, case type, document, and facts.

Is a legal definition the same as legal advice?

No. A definition explains a word in general. Legal advice applies the law to specific facts and recommends what someone should do.

What should I do if I see a legal term in my court papers?

Read the full document, check for deadlines or hearing dates, save the papers, verify official instructions, and contact qualified help if the issue is serious or unclear.

Can this page tell me what to file?

No. This page explains terms only. It does not tell you what to file, what to admit, what to deny, what to argue, whether to settle, or how to respond.

Where can I find help if I do not understand a legal term?

Start with official court websites, court self-help centers, legal aid organizations, law libraries, bar association resources, and recognized legal glossaries.

Related guides

Court Terminology

Learn common court words used in summonses, complaints, hearings, orders, judgments, service, and appeals.

Read court terminology

Court Papers Basics

Learn what court papers may include and why deadlines, hearing dates, and official court instructions matter.

Read court papers basics

Find Legal Help

Learn where to start when looking for legal aid, court self-help centers, lawyer referrals, and public resources.

Find legal help resources
Disclaimer: Legal Advice Basics provides general legal information for educational purposes only. It is not a law firm and does not provide legal advice, legal representation, attorney referrals, case review, document review, deadline calculation, or emergency legal help. Legal terms, definitions, deadlines, procedures, and meanings may vary by jurisdiction, case type, court, agency, document, and facts. If you need advice about your own situation, contact a licensed attorney or qualified legal aid organization.

Last reviewed: May 23, 2026.