The plural form is addenda.
Chat with our AI personalities
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
The plural of abundance is abundances. It is a regular plural.
The word "police" is plural and it takes a plural verb.
The plural is billions.