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
Republicans framed the bathroom and driver’s license bill as an addendum clarifying the intent of a separate 2023 bill barring trans women from accessing female-only spaces.
—
Matthew Kelly, Kansas City Star, 13 Feb. 2026
The lease addendums are a mandatory part of rental agreements across Arizona and the nation.
—AZCentral.com, 4 Feb. 2026
The show is light on tech, but the accompanying images (video design by Stefano DeCarli) pour through as addendums to Felder’s puissant passion of Liszt’s Liebesträume or Beethoven’s Für Elise and land with great effect.
—David John Chávez, Mercury News, 30 Jan. 2026
Hurts waited a beat before offering an interesting addendum.
—Zach Berman, New York Times, 13 Jan. 2026
See All Example Sentences for addendum
Matthew Kelly, Kansas City Star, 13 Feb. 2026
The lease addendums are a mandatory part of rental agreements across Arizona and the nation.
—AZCentral.com, 4 Feb. 2026
The show is light on tech, but the accompanying images (video design by Stefano DeCarli) pour through as addendums to Felder’s puissant passion of Liszt’s Liebesträume or Beethoven’s Für Elise and land with great effect.
—David John Chávez, Mercury News, 30 Jan. 2026
Hurts waited a beat before offering an interesting addendum.
—Zach Berman, New York Times, 13 Jan. 2026
See All Example Sentences for addendum
Recent Examples of Synonyms for addendum
Noun
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Swalwell was among those named by Patel, who has said that his critics are mischaracterizing the appendix by calling it an enemies list.—
Perry Stein The Washington Post,
Arkansas Online,
29 Mar. 2026
-
An inflamed appendix becomes a ruptured one, leading to systemic infection.—
Dr. Lauren Palladino,
Hartford Courant,
22 Mar. 2026
Noun
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Critics of these no tax increase bonds argue that instead of the debt having an end date when it will be paid off, taxpayers have to chip away at debt for a longer length of time.—
Eleanor Nash,
Kansas City Star,
28 Mar. 2026
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With its PrecisionCore Heat-Free technology, the ink dries quickly to avoid smudging, while the two-sided printing capabilities increase efficiency.—
George Yang,
PC Magazine,
28 Mar. 2026
Noun
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The changes at the intersection will mean the addition of two signs that will have flashing lights triggered by people or traffic at the crossing roads.—
Alan Gionet,
CBS News,
25 Mar. 2026
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In addition to his robust campaign fundraising, Holland has been able to bring on the head of the local Republican Party, Matthew Kay, as his campaign chair.—
Richard A. Webster,
ProPublica,
24 Mar. 2026
Noun
-
With their visit comes a boost to other parts of the city.—
Victor Jacobo,
CBS News,
28 Mar. 2026
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In a client note, Fishman said the introduction of an ad tier in 2022 has provided a boost to the company by increasing its options.—
Dade Hayes,
Deadline,
27 Mar. 2026
Noun
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Dark green in particular, such as bottle green, gains depth when combined with a shade like petrol or teal.—
Jana Ackermann,
Glamour,
28 Mar. 2026
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However, peeling back the curtain, that support drops substantially when looking solely at younger Republicans and conservative-leaning independents — two groups that Trump made gains with in 2024.—
Elena Moore,
NPR,
28 Mar. 2026
Cite this Entry
“Addendum.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/addendum. Accessed 30 Mar. 2026.
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