add-on [noun]

Definition of add-on:

a component that is added to something to improve it

Synonyms of add-on:

● Addition

● Improver

● Supplement

● Accessory

● Additional

● Added

● Appurtenance

● Additive

● Addendum

● Extension


Opposite/Antonyms of add-on:

● Avulsion

● Essential

● Take away

● Decolonise


Sentence/Example of add-on:

The add-on not only does simple journalizing, but it also does tax calculation, counterbalancing accounting, and data validation.