Definitions

1. noun

a supplementary item or document added to the end of a document or agreement, typically containing additional terms or conditions.

“The lawyer added an addendum to the contract, outlining the client’s responsibilities.”

2. noun

a supplementary item or document added to a report, paper, or other written work.

“The author included an addendum to her book, addressing criticisms from readers.”

3. verb

to add or append something to the end of a document or agreement.

“The editor decided to addendum the contract, incorporating the new terms.”