When something has had an addendum, it is said to be "addendumed"
John made an addendum to that article. He addendumed it.
by gerardb38 February 8, 2010
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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."
by Brendan Sinclair December 29, 2005
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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.
by No socks November 10, 2021
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A chess rule that allows either player to place and/or leave their king in check. But only if the attacking player is unable to capitalize on the move example: capturing the king would result in their own king being placed in check.
by Thunderprime November 2, 2021
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A chess rule that allows either player to place and/or leave their king in check. But only if the attacking player would otherwise not be able to capitalize on the move.

Example: Capturing the king would place your own king in check.
Want to play chess? Let's use "the Davison addendum"
by Thunderprime November 2, 2021
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A chess rule that allows either player to place and/or leave their king in check. But only if the attacking player would otherwise not be able to capitalize on the move.

Example: Capturing the king would place your own king in check.
Want to play chess? Let's use "the Davison addendum"
by Thunderprime November 2, 2021
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An "afterthought" phrase that someone throws in at the end of a sentence to modify it into a more-polite statement.
A classic mannerly addendum is when someone hastily asks you to perform a certain task as he is rushing out the door, then pleasantly adds, "Please and thank you" after he's voiced his request.
by QuacksO October 26, 2018
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