Legal glossary/defeasance

U.S. legal term

defeasance

A defeasance is a legal concept referring to the failure of a contract or legal obligation to be fully performed, often resulting in a breach of warranty or contract.

Imagine a situation where someone promised to do something important (like paying money or doing a job), but they didn't actually do it correctly. In law, 'defeasance' means that the promise was broken, and the person who failed to deliver is in trouble because they broke the agreement.

It matters because it establishes the legal basis for seeking remedies when a party fails to perform as promised. In litigation, proving a defeasance is crucial for demonstrating that a breach occurred and justifying damages or seeking specific relief under contract law.

This page gives general U.S. legal information, not legal advice, and contract meaning can change by jurisdiction, industry, and clause wording.

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Source
LexPredict Legal Dictionary
Category
Contract Law/Warranties
Status
Expanded entry available
Updated
Apr 26, 2026

Direct answer

What does defeasance mean in U.S. legal context?

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A defeasance is a legal concept referring to the failure of a contract or legal obligation to be fully performed, often resulting in a breach of warranty or contract. It signifies that a party has failed to meet a contractual duty, leading to potential remedies for the injured party.

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Plain English

defeasance, explained simply

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Imagine a situation where someone promised to do something important (like paying money or doing a job), but they didn't actually do it correctly. In law, 'defeasance' means that the promise was broken, and the person who failed to deliver is in trouble because they broke the agreement.

How defeasance shows up in legal documents

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What is it?

A defeasance is a legal term indicating a failure or deficiency in a contract, warranty, or legal obligation. It signifies that a contractual duty has not been met, often leading to a claim for breach of contract or warranty.

Why does it matter?

It matters because it establishes the legal basis for seeking remedies when a party fails to perform as promised. In litigation, proving a defeasance is crucial for demonstrating that a breach occurred and justifying damages or seeking specific relief under contract law.

When does it matter?

It usually appears in contexts where one party's obligation has failed to meet the contractual standard, such as when a warranty fails or a contractual duty is breached. This occurs during disputes over broken agreements or defective goods.

Where is it usually seen?

Defeasance is typically seen in contract law, warranty claims, and litigation involving breach of contract. It appears in legal documents related to warranties, guarantees, and contractual obligations.

Who is affected?

The parties involved—the contracting party who failed to perform, the injured party seeking relief, and the legal system itself—are affected by the defeasance because it determines liability and remedies.

How does it work?

In practice, a defeasance is demonstrated through evidence showing that the promised performance was deficient or absent. The claimant must show that the contract was breached, which often involves proving the defect in the original promise.

Understand defeasance fast

A compact visual model plus real-world examples makes the term easier to recognize in contracts, claims, and negotiation language.

Use this as a quick mental picture before you read the examples or go back into the clause itself.

An explainer image has not been generated for this term yet, but the examples on the right still show how it usually matters in practice.
1
Example

A claim where a product fails to meet the guaranteed specifications (a warranty defeasance).

2
Example

A legal action where one party proves the other party failed to uphold a contractual obligation.

Next step

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Knowledge graph

Where defeasance connects to real contract work

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Glossary source
LexPredict legal dictionary
Use it for
Fast meaning checks before deeper contract review
Public page status
Expanded and live

Source attribution: LexPredict legal dictionary repository. CC BY-SA 4.0.

Disclaimer: We do not provide legal advice. We translate legal language into plain English and help you prepare for a conversation with a lawyer.