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Synonyms

add-on

American  
[ad-on, -awn] / ˈædˌɒn, -ˌɔn /

noun

  • add-ons
    plural
  1. a device or unit added to equipment or a construction.

    an add-on to a computer;

    a nice add-on to an old house.

  2. an extra charge.

    Add-ons for taxes and tour guide fees boosted the price of the vacation to $2,500.

  3. an additional item, as a rider or provision.

    This is just another legislative add-on.

  4. anything added on.

    Our sable faux fur vest is an easy add-on for dressy or casual occasions.


adjective

  1. being installed or provided as an add-on.

    Add-on packs for this game are just a few dollars.

add-on British  

noun

  1. a feature that can be added to a standard model or package to give increased benefits

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms

Etymology

Origin of add-on

First recorded in 1945–50; noun and adj. use of verb phrase add on

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Takeaways from this high-tech, high-stakes MLB add-on that became instantly popular with fans and something of a poker hand for players:

From Los Angeles Times ● Oct. 7, 2026

According to EA's latest financial report, , externalFUT was responsible for a "substantial portion" of the $5.5bn annual revenue it made from selling add-on content for its games.

From BBC ● Jul. 24, 2026

The companies’ direct-to-cell exclusivity deal in the U.S., which currently offers Starlink Mobile as a $10 per month add-on to T-Mobile’s plans, ends next month.

From MarketWatch ● Jun. 29, 2026

As of January, employers can instead buy the coverage as an add-on, and 20% have opted to, says Amy McHugh, a spokeswoman for the Massachusetts insurer.

From The Wall Street Journal ● Jun. 7, 2026

She lay in a supply of after-school snacks, and she gave me a key to the back door, the one that opened the add-on living room.

From "Silent To The Bone" by E.L. Konigsburg

Dutch Bros is also known for brightly colored energy drinks, offering a long list of flavors and add-ons, and for serving mostly cold drinks.

From The Wall Street Journal ● Oct. 2, 2026

He feels he has no choice but to keep up with other dealers in his area, even if his competitors are obscuring fees and add-ons, he said.

From The Wall Street Journal ● Sep. 20, 2026

It also assumed add-ons of 5% for independent production companies and 5% for labor costs in areas the Federal Emergency Management Agency has declared disasters.

From Los Angeles Times ● Sep. 15, 2026

Liverpool have completed the signing of 18-year-old goalkeeper Lucca Brughmans from Belgian side Genk in a deal that could be worth up to £30m including add-ons.

From BBC ● Sep. 1, 2026

Or consider the automobile dealership: a salesman does his best to obscure the car’s base price under a mountain of add-ons and incentives.

From "Freakonomics: A Rogue Economist Explores the Hidden Side of Everything" by Steven D. Levitt

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