1
as in appendix
a part added at the end of a book or periodical
there's an addendum from the author to explain certain stylistic choices that she made
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Antonyms & Near Antonyms
2
as in increase
something added (as by growth)
with each new addendum the list of demands simply got more absurd
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Example Sentences
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Recent Examples of addendum
Night 2 also offered a fresh addendum to an existing favorite piece of animation: their signature skeleton’s wild chopper ride.
—
Chris Willman, Variety, 22 Mar. 2025
My favorite story in the book is about the contemporary Chicago incarnation (which gets addressed briefly, as an addendum to the traveling festival).
—Christopher Borrelli, Chicago Tribune, 18 Mar. 2025
Thus, Smith offered an addendum to the hype for the industry finally reaching gender equality in its protagonists.
—Angelique Jackson, Variety, 11 Feb. 2025
The Savage City Council approved an addendum to the Long-Term Water Purchase Agreement between the City of Burnsville and the City of Savage on April 1.
—Alex Malm, Twin Cities, 7 Feb. 2025
See All Example Sentences for addendum
Chris Willman, Variety, 22 Mar. 2025
My favorite story in the book is about the contemporary Chicago incarnation (which gets addressed briefly, as an addendum to the traveling festival).
—Christopher Borrelli, Chicago Tribune, 18 Mar. 2025
Thus, Smith offered an addendum to the hype for the industry finally reaching gender equality in its protagonists.
—Angelique Jackson, Variety, 11 Feb. 2025
The Savage City Council approved an addendum to the Long-Term Water Purchase Agreement between the City of Burnsville and the City of Savage on April 1.
—Alex Malm, Twin Cities, 7 Feb. 2025
See All Example Sentences for addendum
Recent Examples of Synonyms for addendum
Noun
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The Brazil international only had surgery to remove his appendix 13 days earlier, making a remarkable recovery and immediately getting back into action.—
Adam Digby,
Forbes.com,
10 May 2025
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Believed to be made from a sheep’s appendix, the prophylactic dates back to 1830 and is likely a souvenir from a brothel, according to a statement from the Rijksmuseum in Amsterdam on Tuesday.—
Jack Guy,
CNN Money,
3 June 2025
Noun
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Certain travel agencies have seen a decline in travel as the cost of living increases.—
Leah Olajide,
Freep.com,
27 July 2025
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Among the exercises examined, yoga showed the most promise—it was associated with a nearly two-hour increase in total sleep time, an almost 16% improvement in sleep efficiency, and a roughly 30-minute reduction in sleep onset.—
Brian Mastroianni,
Health,
26 July 2025
Noun
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In addition to Santora, Schwarzenegger, Adam Higgs, Scott Sullivan, Phil Abraham, Amy Pocha, Seth Cohen and Skydance’s David Ellison, Dana Goldberg, and Matt Thunell served as additional executive producers.—
EW.com,
EW.com,
2 Aug. 2025
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In addition to combing through the archives, Madonna is reportedly working with Deadpool & Wolverine producer Shawn Levy on a limited Netflix series based on her life and career.—
Gil Kaufman,
Billboard,
1 Aug. 2025
Noun
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The Kpop Demon Hunters soundtrack has already been slaying on the charts, and now, David Guetta is joining the project to give one of its songs an extra boost.—
Hannah Dailey,
Billboard,
25 July 2025
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These include profit boosts and early payouts at the top of the home page.—
Tyler Everett,
MSNBC Newsweek,
25 July 2025
Noun
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Success metrics should include engagement and satisfaction alongside performance gains.—
Rick Inatome,
Forbes.com,
28 July 2025
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For many months, job gains have been concentrated in just a few sectors – health care, state and local governments, and leisure and hospitality.—
Paul Davidson,
USA Today,
28 July 2025
Cite this Entry
“Addendum.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/addendum. Accessed 8 Aug. 2025.
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