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addendum
noun
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How to pronounce addendum:

Definition of addendum:

addendum (noun):
a thing added addition
something added on, esp. an appendix to a book or magazine
textual matter that is added onto a publication; usually at the end.

Synonyms for addendum:

addition
adjunct
affix
afterword
appendage
appendix
attachment
augmentation
back matter
codicil
conclusion
documentation
end matter
epilogue
extension
extra
matter
postscript
sequel
supplement
Other 3-syllable words

Here are some other common 3-syllable words.

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