Word.ws English Dictionary

add on

add on verb: to incorporate (something extra, often an amount of money) into something else (often a bill). Also the alternative form of add-on.

Verb

add on (third-person singular simple present adds on, present participle adding on, simple past and past participle added on)

  1. (transitive) To incorporate (something extra, often an amount of money) into something else (often a bill).
  2. (intransitive) To put an expansion (addition) onto a building, usually a home.

Also used as

add on is also the alternative form of add-on.

Forms of add on

Verb
third-person singular presentadds on
present participleadding on
past participleadded on
pastadded on
Noun
pluraladd ons

Questions about add on

What does add on mean?
Add on means to incorporate (something extra, often an amount of money) into something else (often a bill).
What part of speech is add on?
Add on is a verb.
What is the past tense of add on?
The past tense of add on is added on.

Words near add on in the dictionary

  1. add fuel to the fire
  2. add fuel to the flame
  3. add in quadrature
  4. add insult to injury
  5. add oil
  6. add on
  7. add one's twopenn'orth
  8. add ons
  9. add salt to injury
  10. add to the list
  11. add up

Source and license

Adapted from Wiktionary: add on (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “add on.” Word.ws, https://word.ws/add_on. Based on Wiktionary, CC BY-SA 4.0.