addition

noun

ə-ˈdi-shən How to pronounce addition (audio)
Definition of additionnext
1
as in extension
a smaller structure added to a main building a new addition to the library providing space for an expanded video collection

Synonyms & Similar Words

Relevance
2
as in increase
something added (as by growth) the cache of old stamps I found in the discarded desk was a huge addition to my stamp collection

Synonyms & Similar Words

Antonyms & Near Antonyms
3
as in accumulating
the act or process of becoming greater in number how do you account for the addition of more paint stains on your shirt after you put on a smock?

Synonyms & Similar Words

Antonyms & Near Antonyms

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of addition Other new additions to the cast include Swedish composer Anna von Hausswolff and newcomer Pippa Kelly. — Alex Ritman, Variety, 2 Sep. 2026 This is one offseason addition who seems to be worth every penny spent. — David Troy Outkick, FOXNews.com, 2 Sep. 2026 All of them agreed the additions made from the original proposal were not enough. — Rachel Royster, Fort Worth Star-Telegram, 2 Sep. 2026 Gaming and Leisure Properties is the newest addition to JPMorgan's list. — Deena Zaidi, CNBC, 2 Sep. 2026 See All Example Sentences for addition
Recent Examples of Synonyms for addition
  1. extension
  2. increase
  3. accumulating
  4. annex
  5. boost
  6. accumulation
  7. gain
Noun
  • This symbolic gesture is a desperate attempt to spark a turnaround for the slugger, whose power outage follows a recent $500 million extension.
    — Peter Chawaga, Forbes.com, 30 Aug. 2026
  • Perepadya expressed fear that the automatic extension of Ukraine’s TPS designation will be the country’s last, forcing his family to return home.
    — Alula Alderson, Sacbee.com, 30 Aug. 2026
Definition of extension
Noun
  • Driving the increase in murder charges in fatal crashes are a few factors, Cherney and McClain agree.
    — Amanda Lee Myers, USA Today, 4 Sep. 2026
  • Over the past three months, international futures markets saw cocoa rise by more than 60% cumulatively, coffee gain over 30%, and raw sugar futures increase by nearly 30%.
    — , CNBC, 3 Sep. 2026
Definition of increase
Noun
  • While snow totals remain uncertain, this storm is forecast to bring colder air and has a better chance of bringing more widespread and meaningful accumulating snow, particularly in the mountains and higher elevations.
    — Alex Lehnert, CBS News, 14 Apr. 2026
Definition of accumulating
Noun
  • The principal suite, meanwhile, is located in a separate annex and has its own outdoor shower.
    — Annabelle Dufraigne, Architectural Digest, 1 Sep. 2026
  • This book’s story The book — about 2 feet by 2 feet — was found by Nancy and John Flannery of Wheaton, as Nancy Flannery was taking inventory of Wheaton Historic Preservation Council items stored in the basement of an annex at Wheaton’s city hall.
    — Susan Sarkauskas, Chicago Tribune, 24 Aug. 2026
Definition of annex
Noun
  • The bike also has a programmable control system that can provide functions such as boost, wheel-lift assistance, speed limiting and what Bonnell calls E-Clutch functionality (more on that later).
    — New Atlas, New Atlas, 2 Sep. 2026
  • Wichai Yuankham, 35, a factory worker who came to watch the ships arrive, said the naval visit was a welcome boost to the local economy.
    — Mosheh Gains, NBC news, 2 Sep. 2026
Definition of boost
Noun
  • The gradual accumulation of these substances in the body can disrupt normal physiological functions, ultimately leading to disease, impaired health, and, in severe cases, death.
    — Encyclopedia Britannica, Encyclopedia Britannica, 3 Sep. 2026
  • The method could combat refuse accumulation and provide sustenance in remote or disaster locations — or in space someday.
    — Devika Rao, TheWeek, 2 Sep. 2026
Definition of accumulation
Noun
  • Rucci caught a fourth-and-1 conversion pass from Adrian Martinez for a 10-yard gain to the Raiders’ 36, followed by James’ second-effort, 17-yard run.
    — Cam Inman, Mercury News, 28 Aug. 2026
  • In an interview with CNBC, OpenAI CEO Sam Altman emphasized the efficiency gains of the Sol model.
    — , CNBC, 28 Aug. 2026
Definition of gain

Phrases Containing addition

Browse Nearby Words

adding up (to)
addition
additional
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Cite this Entry

“Addition.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/addition. Accessed 5 Sep. 2026.

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More from Merriam-Webster on addition

Britannica.com: Encyclopedia article about addition

Last Updated: - Updated example sentences
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