Can We Say Addendums?

Addenda is the plural form of addendum. If you have more than one addendum, use addenda, not addendums. ... Addendum is only ever singular, and addenda is only ever plural.

Is it correct to say addendums?

These are simply two forms of the same word. However, because one is plural and one is singular, you cannot interchange them. Addenda is the plural form, and means additions, especially to a book or other written document.

What are addendums?

An addendum is an attachment to a contract that modifies the terms and conditions of the original contract. Addendums are used to efficiently update the terms or conditions of many types of contracts.