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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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
County mayor Jerry Demings strongly urged commissioners to ratify the controversial addendum to that pact, which could result in county corrections officers driving detainees more than four hours to Alligator Alcatraz to be deported.
—
Stephen Hudak, The Orlando Sentinel, 5 Aug. 2025
Orange County Mayor Jerry Demings capitulated Friday by signing an addendum to the county’s agreement with ICE.
—Sun Sentinel Editorial Board, Sun Sentinel, 1 Aug. 2025
Begrudgingly, footnotes, addendums, hints, admissions, confessions, were offered.
—Charles E. Kraus, New York Daily News, 4 July 2025
The new addendums in the Human Relations chapter state that the village shall not assist immigration officers who do not have a criminal warrant, assist in information sharing, arrest or detain someone based solely on their immigration status.
—Richard Requena, Chicago Tribune, 1 Apr. 2025
See All Example Sentences for addendum
Stephen Hudak, The Orlando Sentinel, 5 Aug. 2025
Orange County Mayor Jerry Demings capitulated Friday by signing an addendum to the county’s agreement with ICE.
—Sun Sentinel Editorial Board, Sun Sentinel, 1 Aug. 2025
Begrudgingly, footnotes, addendums, hints, admissions, confessions, were offered.
—Charles E. Kraus, New York Daily News, 4 July 2025
The new addendums in the Human Relations chapter state that the village shall not assist immigration officers who do not have a criminal warrant, assist in information sharing, arrest or detain someone based solely on their immigration status.
—Richard Requena, Chicago Tribune, 1 Apr. 2025
See All Example Sentences for addendum
Recent Examples of Synonyms for addendum
Noun
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While the appendix could be removed that morning, the tumor would require an entirely different battle.—
MSNBC Newsweek,
MSNBC Newsweek,
8 Oct. 2025
-
As part of the terms ending the four-year-long occupation, Washington required that Cuba integrate something called the Platt Amendment into an appendix of the island’s 1901 constitution.—
Miriam Pensack,
The Dial,
30 Sep. 2025
Noun
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During periods of intense rainfall, the risk of flooding increases, particularly in low-lying and flood-prone areas.—
NC Weather Bot,
Charlotte Observer,
13 Oct. 2025
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Insurers will be allowed to raise premiums by as much as $50 a month for 2026, up from a $35 increase allowed this year.—
Arkansas Online,
Arkansas Online,
12 Oct. 2025
Noun
-
Whisk in dry ingredients in 3 additions, alternating with apple cider (or juice) in 2 additions and whisking to blend.—
Cathy Thomas,
Oc Register,
13 Oct. 2025
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In addition to the port crane fees, additional changes include the fee structure changes for vehicle carriers, otherwise known as roll-on roll-off vessels, which help to carry automobiles, farm equipment and other heavy machinery.—
Lori Ann LaRocco,
CNBC,
13 Oct. 2025
Noun
-
Fazit is the boost your routine never saw coming.—
Annie Blackman,
Allure,
9 Oct. 2025
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Regarding York, the coaching change from John Tortorella to Tocchet did seem to give him a boost, judging from his training camp.—
Kevin Kurz,
New York Times,
9 Oct. 2025
Noun
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The Chiefs opened the third quarter at their own 19-yard line, but Mahomes guided the offense with chunk gains to five different pass-catchers during an eight-play touchdown drive that took less than four minutes.—
Kansas City Star,
Kansas City Star,
13 Oct. 2025
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Projected by some pundits to land higher in the draft, the 6-foot-7 big man’s fall was the Hornets’ gain.—
Roderick Boone,
Charlotte Observer,
13 Oct. 2025
Cite this Entry
“Addendum.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/addendum. Accessed 15 Oct. 2025.
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