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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Recent Examples of addendum
Matariyeh’s lawyer William Walker had submitted Norgaard addendums to Mataryieh’s guilty pleas in August.
—
Dale Morin, Twin Cities, 26 Nov. 2025
This latter addendum would cover athletes like Imane Khelif, a boxer who made headlines at the most recent Olympic games.
—Abby Monteil, Them., 11 Nov. 2025
The employees were either terminated by the station or walked out on their own accord after declining to sign a strict noncompete addendum on their contracts.
—Heather Bushman, IndyStar, 28 Oct. 2025
Before signing a lease agreement or any lease addendums, take time to carefully read through the terms.
—Tamia Fowlkes, jsonline.com, 20 Oct. 2025
See All Example Sentences for addendum
Dale Morin, Twin Cities, 26 Nov. 2025
This latter addendum would cover athletes like Imane Khelif, a boxer who made headlines at the most recent Olympic games.
—Abby Monteil, Them., 11 Nov. 2025
The employees were either terminated by the station or walked out on their own accord after declining to sign a strict noncompete addendum on their contracts.
—Heather Bushman, IndyStar, 28 Oct. 2025
Before signing a lease agreement or any lease addendums, take time to carefully read through the terms.
—Tamia Fowlkes, jsonline.com, 20 Oct. 2025
See All Example Sentences for addendum
Recent Examples of Synonyms for addendum
Noun
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Treatment for the condition generally involves antibiotics and surgical removal of the appendix, per Mayo Clinic.—
Rachel Raposas,
PEOPLE,
8 Jan. 2026
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According to the accompanying appendix, which outlined the accusations and was under seal until Tuesday, Remington penned the bulk of Hyland’s opinion denying the defense’s dismissal motion, constituting a clear breach of Wisconsin’s judicial code of conduct.—
Mia Cathell,
The Washington Examiner,
11 Dec. 2025
Noun
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While those percentages add up to a total of 17 percentage points, a union spokesperson confirmed Friday afternoon that the overall increase totals 18% when annual compounding is accounted for.—
Paul Sisson,
San Diego Union-Tribune,
24 Jan. 2026
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That increase also sets the stage for what many households will notice next year.—
Emma Waldman,
Forbes.com,
24 Jan. 2026
Noun
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In addition to the change of being at a different location, the festival that's traditionally been held on Thursday, Friday and Saturday will be held on Saturday and Sunday.—
Jesse Sarles,
CBS News,
28 Jan. 2026
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As such, the front office could be choosing between retaining Simons and using the full nontaxpayer midlevel exception for a new addition.—
Danny Leroux,
New York Times,
28 Jan. 2026
Noun
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Production snags have hampered the comeback bid, a disappointment for investors who anticipated more of a boost from new products.—
Bloomberg,
Mercury News,
23 Jan. 2026
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That’s why housing policies we’re pitched are filled with dreams of construction booms or giant income boosts.—
Jonathan Lansner,
Oc Register,
23 Jan. 2026
Noun
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This post was originally published on January 23 Bitcoin has limped into 2026, flailing in the wake of a gold price boom that’s catapulted it to an eye-watering $34 trillion market capitalization (triggering predictions of even more gains to come).—
Billy Bambrough,
Forbes.com,
25 Jan. 2026
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Trump’s second term came on the heels of the S&P 500’s first back-to-back annual gains of more than 20% since the 1990s.—
John Towfighi,
CNN Money,
25 Jan. 2026
Cite this Entry
“Addendum.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/addendum. Accessed 31 Jan. 2026.
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