Addendum
Addendum noun - A part added at the end of a book or periodical.
Optional extra and addendum are semantically related. In some cases you can use "Optional extra" instead a noun "Addendum".
Optional extra
Addendum and optional extra are semantically related. Sometimes you can use "Addendum" instead a noun phrase "Optional extra".
Mutual synonyms
Related pairs
- attachment and addendum
- attachment and optional extra
- addition and addendum
- addition and optional extra
- adjunct and addendum
- adjunct and optional extra
- accessory and addendum
- accessory and optional extra
- extension and addendum
- extension and optional extra
- appendage and addendum
- appendage and optional extra
- supplement and addendum
- supplement and optional extra
Cite this Source
Optional extra and Addendum. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/addendum/optional_extra
Addendum & Optional extra. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/addendum/optional_extra>.
Optional extra or Addendum. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/addendum/optional_extra.
Google Ngram Viewer shows how "addendum" and "optional extra" have occurred on timeline