addendum

Legal Document ModificationLegal glossary term

Legal Definition

An addendum is a supplementary document attached to an existing contract or legal instrument, which modifies, clarifies, or adds new terms to the original agreement. It serves to amend the scope of the primary document by providing additional specific details or stipulations.

Plain-English Translation

Imagine you have a big paper (the main contract), and then you add a little extra piece to it. This extra piece is an addendum, which means adding more rules or details to the original agreement.

Context in Contracts

It matters because it formally changes the obligations, rights, or specific conditions outlined in the main contract. It ensures that all parties agree on the updated or supplementary terms agreed upon by both parties.

Visual model

Understand addendum fast

ELI10 illustration for addendum
01

An addendum to a lease agreement detailing specific repair obligations.

02

An addendum clarifying the scope of work defined in an initial contract.

Document context

How addendum shows up in legal documents

What is it?

An addendum is a written supplement to a formal legal document, such as a contract, that modifies, clarifies, or adds new terms to the original agreement, thereby changing the scope or stipulations of the primary document.

Why does it matter?

It matters because it formally changes the obligations, rights, or specific conditions outlined in the main contract. It ensures that all parties agree on the updated or supplementary terms agreed upon by both parties.

When does it matter?

It usually appears when a contract needs to be amended after signing, when new terms arise during the execution phase, or when an existing agreement requires a formal modification to its original text.

Where is it usually seen?

Addenda are typically found within legal documents like contracts, statutes, or regulatory filings where the primary document is being supplemented with additional specific provisions.

Who is affected?

The parties involved in the contract (e.g., the contracting parties) are affected because they must agree to and incorporate the changes detailed in the addendum.

How does it work?

Practically, an addendum is incorporated into the original document, often by referencing it within the main agreement or explicitly attaching a separate document that modifies the original terms, ensuring legal consistency.

Related terms

Terms to compare with addendum

contract

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Wikipedia

Addendum

An addendum or appendix, in general, is an addition required to be made to a document by its author subsequent to its printing or publication. It comes from the gerundive addendum, plural addenda, "that which is to be added", from addere (lit. ''give...

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