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addendum
/əˈdɛndəm/
additional section
The contract was updated with an addendum clarifying the payment terms.
The contract was modified by adding a section that explains how payments should be made.
formal
A section added to the end of a document to provide additional information or corrections.
The report included an addendum with the latest survey data.
The report had an extra section at the end that contained the most recent survey results.
After publication, the author issued an addendum to address reader feedback.
After the book was published, the writer released an additional section to respond to comments from readers.
Often used in legal, academic, and business documents. The plural form is 'addenda' or 'addendums'.
Collocations
legal addenduman additional section in a legal documenttechnical addenduman extra section in a technical reportissue an addendumto publish an additional section
Antonyms
Pro Tip
Plural form
The plural of 'addendum' can be either 'addenda' (traditional Latin form) or 'addendums' (anglicized form). Both are correct, but 'addenda' is more common in formal writing.
Gold Rule
Use in formal documents
Only use 'addendum' when referring to a formal addition to a document, such as a contract, report, or academic paper. Do not use it for casual or minor updates.
Word Origin
From Latin 'addendum' (thing to be added), neuter singular gerundive of 'addere' (to add), from 'ad-' (to) + 'dare' (to give).
Usage Notes
Addendum is typically used for formal or written contexts. It is not used for minor updates or casual additions.
Word Breakdown
add-
to add
root-endum
thing to be done
suffixEnglish Dictionary