Addendum and Codicil

Addendum

Addendum noun - A part added at the end of a book or periodical.
Usage example: there's an addendum from the author to explain certain stylistic choices that she made

Codicil is a synonym for addendum in addition topic. In some cases you can use "Codicil" instead a noun "Addendum", when it comes to topics like appendix, added. popular alternative

Codicil

Codicil noun - A part added at the end of a book or periodical.
Usage example: a codicil to the treaty was necessary to clarify certain provisos that had proved to be ambiguous
Show all Definitions
Synonyms for Codicil

Addendum is a synonym for codicil in addition topic. You can use "Addendum" instead a noun "Codicil", if it concerns topics such as added part to document. popular alternative
Cite this Source
Codicil and Addendum. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/addendum/codicil
Addendum & Codicil. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/addendum/codicil>.
Codicil or Addendum. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/addendum/codicil.
Google Ngram Viewer shows how "addendum" and "codicil" have occurred on timeline