According to several dictionary sources and a number of scholarly types, "addenda" is the plural of "addendum", and not "addendums" as most spell checkers will accurately mark as wrong.
The plural is "addenda."
The plural form of addendum is addenda
Addendum is singular. Addenda or addendums is plural.
Addendum is the singular. The plural is addenda.
The plural form for the noun addendum is addenda or addendums (both are accepted).
Some examples of hard words that have irregular plurals are: oxen, children, criteria, and phenomena. These words do not follow the typical rule of adding "s" or "es" to form their plural form.
Addenda.
addenda
plural form of synopsis?
Addenda.It's not addendums.
Addendum is the singular form.The plural forms are addenda or addendums, both are accepted.
Addendum is the singular form; the plural form is addenda, although there is some acceptance for addendums as the plural.
addendum is something (facts/information etc.) added afterwards/ at a later date addenda is the plural