addendum 

Something that is added or later to be added, e.g. a supplement to a book.

"I decided to add an addendum to my novel after I'd finished writing it."

addendum by Brendan Sinclair December 28, 2005

addendment 

A malaprop combining the words addendum and amendment.

WTF, Mike just said "addendment" - is that even a word? Moar beer plz.

addendment by ehhhh87132 June 5, 2009

Addendix 

Slamming together an appendix to a term paper in a rush as the project is due

Sarah had to drop in the addendix to her term paper the morning it was due

Addendix by Goofybacs and Ninjaboy 66 October 2, 2009

Addendump 

When you take a crap but five minutes later have to go back because you walked away too early.

"I rushed my bathroom break because I was running late, but five mins later had to file an addendump anyway."

Addendump by Ultimate Stink November 24, 2020

addendumb 

A useless, nonsensical, or pointless addition to something. A non sequitor.

Oh. As an addendumb to our discussion about coffee. Did you know that polar bears prefer tea over coffee?

addendumb by SJ@24 July 18, 2009

Sock rule addendum

As the true creator of the rule not like the imitators, i’d like to clear some things. First thing first wearing 1 sock doesn’t change anything it’s still gay, that’s the law. Second thing, all those who claim to be the true creator are wrong I created this rule back in 2013 as a joke with my friends. I posted it back in 2018 to stop people from claiming it and changing the rules. So remember keep those socks on unless you like cock! Love- no socks

Sock rule addendum. It’s gay if you’re not wearing socks. See Sock rule for further clarification.

Sock rule addendum by No socks November 9, 2021

addendumed 

When something has had an addendum, it is said to be "addendumed"

John made an addendum to that article. He addendumed it.

addendumed by gerardb38 February 8, 2010