Find out if add-on is plural by checking the Plural Dictionary: www.isplural.com/plural_singular/add-on .

add-on

Is add-on plural

Add-on is both plural and singular plural singular singular both plural and singular plural plural both plural and singular singular.

How to say add-on:

Cite This Source

Not sure why add-on is both plural singular singular both plural plural both singular? Contact Us! We'll explain.

Syllable Quiz

Can you divide
vacuum into syllables?

is Plural, Plural or Singular, is Plural Dictionary,
and is Singular are all trademarks of Plural Of.