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
Synonyms & Similar Words
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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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Recent Examples of addendum
Hurts waited a beat before offering an interesting addendum.
—
Zach Berman, New York Times, 13 Jan. 2026
The Johnsons claim that’s at odds with a utility addendum in their lease.
—Nora O'Neill, Charlotte Observer, 8 Jan. 2026
He’s talked with fellow memorial monument suppliers about adding an addendum to large orders telling buyers that the price could be later adjusted depending on if tariff rates move.
—Alex Harring, CNBC, 30 Nov. 2025
Matariyeh’s lawyer William Walker had submitted Norgaard addendums to Mataryieh’s guilty pleas in August.
—Dale Morin, Twin Cities, 26 Nov. 2025
See All Example Sentences for addendum
Zach Berman, New York Times, 13 Jan. 2026
The Johnsons claim that’s at odds with a utility addendum in their lease.
—Nora O'Neill, Charlotte Observer, 8 Jan. 2026
He’s talked with fellow memorial monument suppliers about adding an addendum to large orders telling buyers that the price could be later adjusted depending on if tariff rates move.
—Alex Harring, CNBC, 30 Nov. 2025
Matariyeh’s lawyer William Walker had submitted Norgaard addendums to Mataryieh’s guilty pleas in August.
—Dale Morin, Twin Cities, 26 Nov. 2025
See All Example Sentences for addendum
Recent Examples of Synonyms for addendum
Noun
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Doctors at a Broward County urgent care clinic said her 13-year-old daughter’s appendix was at risk of bursting.—
Miami Herald,
Miami Herald,
20 Feb. 2026
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The winter Olympic games are often seen as more of an appendix to their larger summertime counterparts than a tentpole in themselves.—
Alison Herman,
Variety,
6 Feb. 2026
Noun
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Vector control districts in Los Angeles, Orange and Ventura counties have confirmed a significant increase in mosquito activity, which is highly unusual for this time of the year.—
Karen Garcia,
Los Angeles Times,
28 Feb. 2026
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Both were part of RTD’s FasTracks project, approved by voters in 2004 on the understanding that revenues from a sales tax increase would fund eventual extension of the G Line to Golden and the B Line to Boulder and Longmont.—
Bruce Finley,
Denver Post,
27 Feb. 2026
Noun
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In addition to Colombia’s Gomez, the Aztecs’ roster includes athletes from Mexico (Cano), Sweden (Bergdahl) and Hungary (junior swimmer Reka Nyiradi).—
Bill Center,
San Diego Union-Tribune,
25 Feb. 2026
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In addition to his daughter, survivors include his sons, Christopher and Timothy, and his grandson, Brandon.—
Mike Barnes,
HollywoodReporter,
24 Feb. 2026
Noun
-
The only way to achieve economic growth in a country with a shrinking labor force is through an explosive boost to productivity.—
Tiana Lowe Doescher,
The Washington Examiner,
27 Feb. 2026
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In addition to using the Authors Unite email lists, Wagner also coaches authors on how to use their own network to give bestseller campaigns an extra boost, helps authors land podcast appearances and more.—
Malana Van Tyler,
Miami Herald,
27 Feb. 2026
Noun
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Competitors often cite the hills of west Little Rock as the highlight and most challenging part of the marathon due to the gain in elevation and the scenery that comes with it.—
Arkansas Online,
Arkansas Online,
1 Mar. 2026
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Dorsey tied the cuts directly to efficiency gains from the company’s AI rollout, Fortune reported.—
Sheryl Estrada,
Fortune,
28 Feb. 2026
Cite this Entry
“Addendum.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/addendum. Accessed 2 Mar. 2026.
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