add-on

1 of 2

noun

ˈad-ˌän 

-ˌȯn

: something added on: such as

a

: a sum or amount added on

b

: something (such as an accessory or added feature) that enhances the thing it is added to

computer hardware add-ons

add-on

2 of 2

adjective

1

: being or able to be added on

an add-on device

2

: able to be added to

add-on certificates of deposit

Synonyms

Noun

• accessory
• accessary
• accoutrement
• accouterment
• adapter
• adaptor
• adjunct
• appendage
• appliance
• attachment
• option

Examples of add-on in a Sentence

Noun

a blow-dryer that comes with a couple of add-ons for people who are serious about styling their hair

Recent Examples on the Web

Noun

There’s a lot of add-on costs that come with the purchase of an artwork, which are also being more carefully considered with each purchase. —Maximilíano Durón, ARTnews.com, 5 Nov. 2024

Tickets for the show, which runs Nov. 29-Jan. 4, 2025, are on sale now for $45, with add-ons available. —John Wenzel, The Denver Post, 4 Nov. 2024

Adjective

For these patients, Nexletol could be an effective add-on treatment. —Nick Blackmer, Verywell Health, 22 Mar. 2023

These add-on panels, along with the bumpers and mirrors, are all painted the color of the body, which on the 16V is restricted to silver, red, or black. —Csaba Csere, Car and Driver, 21 Mar. 2023

Word History

First Known Use

Noun

1930, in the meaning defined above

Adjective

1955, in the meaning defined at sense 1

Legal Definition

add-on

adjective

1

: being or able to be added on

add-on no-fault benefits

2

: able to be added to

add-on certificates of deposit