Plural of addendum
irregular plural
The plural of addendum is addenda or addendums.
Forms of addendum
| Singular | addendum /əˈdɛn.dəm/ |
|---|---|
| Plural | addenda /əˈdɛn.də/ addendums |
| Countable | countable |
Meaning of addendum
- noun Something to be added; especially text added as an appendix or supplement to a document.
- noun A postscript.
- noun The height by which the tooth of a gear projects beyond (outside for external, or inside for internal) the standard pitch circle or pitch line.
Nouns ending in -um: plural -a
- minimum (minima)
- medium (media)
- maximum (maxima)
- spectrum (spectra)
- curriculum (curricula)
- referendum (referenda)
- millennium (millennia)
- consortium (consortia)
- podium (podia)
- aquarium (aquaria)
- optimum (optima)
- gymnasium (gymnasia)
Questions about the plural of addendum
- What is the plural of addendum?
- The plural of addendum is addenda or addendums.
- Which is correct, addenda or addendums?
- Both are used. addenda is the more common of the two in English writing.
- Is addendum countable?
- Addendum is a countable noun.
Source and license
Adapted from Wiktionary: addendum (page history and authors) and the entries of its forms. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out forms marked obsolete, archaic, rare or dialectal and added the examples. Wiktionary data of 2026-09-02.
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Cite this page: “Plural of addendum.” Word.ws, https://word.ws/plural/addendum. Based on Wiktionary, CC BY-SA 4.0.