Top Definition
Derived from the word "mundane", a mun is the author writing for a character in an online RPG. Can also be used as a suffix to denote a reference to a character's player rather than the character. Synonymous with certain connotations of roleplayer, author, player.
"That mun may be an idiot, but I can't fault his playing style."

"Do you think Wren-mun's coming tonight? I want to finish this RP with her."
by Riku December 24, 2003

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the man or woman behind a character in role-playing.
If the person in role-playing online, and their screenname is Ayisha369, then, when speaking out of character, she would be referred to as Ayisha-mun.
by Ninkubator November 29, 2005

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Welsh equivalent of 'man', as used for emphasis.
'Aawww, come on, mun, I only want to borrow your car to go mewling.'
by The Moai April 19, 2005

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Something that is money, amazing, or awesome.
That wheelchair back flip was muns.
by Marcus Siegel October 12, 2007

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a male bun.
A ponytail was not enough for Steve's luscious locks so he decided to put his hair into a mun.
by KShanley January 23, 2009

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Acronym for "model United Nations," either a club or class, usu. in high schools; an extremely time-consuming activity where one student learns about international policies and takes on the role of a delegate for a particular country to discuss any given topic.

(Other-- Known to cause high school students to stay up late in researching.)
"I'm representing France in the committee of IAEA," said the M.U.N. student.
by Strokes fan February 01, 2004

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Welsh version of "man" often used to

1. Express Anger
2. Greet a person
1. STOP IT MUN!

2. Alright Mun what's occuring?
by colourmeprettyx May 12, 2009

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The Urban Dictionary T-Shirt

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The Urban Dictionary T-Shirt

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