add-on
Americannoun
-
a device or unit added to equipment or a construction.
an add-on to a computer;
a nice add-on to an old house.
-
an extra charge.
Add-ons for taxes and tour guide fees boosted the price of the vacation to $2,500.
-
an additional item, as a rider or provision.
This is just another legislative add-on.
-
anything added on.
Our sable faux fur vest is an easy add-on for dressy or casual occasions.
adjective
noun
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:
The strongest stocks often provide add-on buy points during longer-term advances, and this setup may offer one above the bullish ascending triangle trigger at $500.
From Barron's ● May 27, 2026
If they had bought an add-on then that cost would have been covered.
From BBC ● May 10, 2026
Spirit grew quickly in the early 2000s, paving the way for other budget carriers such as Frontier to offer low-cost tickets with countless paid add-on options for seats and in-flight beverages.
From Los Angeles Times ● May 1, 2026
The invite-only program costs $800 a month and is only available as an add-on to existing Vivrelle memberships, which start at $139 a month.
From The Wall Street Journal ● Apr. 30, 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
Each new customer provides another opportunity for Apple to sell high-margin add-ons from App Store apps to storage.
From The Wall Street Journal ● Jul. 17, 2026
Sources at London City say she is earning less than £1m as a base salary, though potential add-ons and bonuses will increase it.
From BBC ● Jul. 8, 2026
Spurs previously had a bid of about £80m rejected by Newcastle, but are now set to pay an initial £92.5m plus a further £7.5m in add-ons.
From BBC ● Jul. 1, 2026
For many car dealers, the goal is to get shoppers in the store, where they might be more likely to accept fees and add-ons after having already invested time.
From The Wall Street Journal ● Jun. 15, 2026
It is a huge old farmhouse, that has had so many add-ons it looks like a cluster of second thoughts.
From "The View From Saturday" by E.L. Konigsburg
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
