Skip to main content
m.u or mu is an abbreviation that means "Mutual Understanding." It's when two people like each other but won't commit to a relationship.
me and julia aren't together, just m.u.
M.U by kimkikay March 24, 2020
Words you can keep
M.U. Mutual Understanding. This meaning can be defined in two ways:

a. 2 people like each other but aren't in a relationship
b. A talking stage between two people who like each other
N: Hey, aren't they a M.U.?
M.U. by Rocksssssssssssssssss October 23, 2022
1. hayy.. gusto ko tanggalin m.u ko..
2. cant take off my m.u
3.

kris 3:56:45 AM
di ko nagawa mg bura ng m.u ko
m.u by gagongdj December 7, 2010
Abbreviated for the phrase, "Mobile Upload." Most commonly used on Facebook. Only those deeply affiliated with Mobile Uploads can use it. "Mupload" is the immature form of M.U.
That's such a cute m.u.! Let's upload it!
M.U. by musforeveR!!!! January 26, 2010
A freeware game engine that allows you to play 2d fighting matches with an unlimited number of characters and stages. Infinitely customizable, mugen facilitates users' creativity and artistic skills as they create the various aspects of the game. First released in 1999 by Elecbyte, the community has thrived even in spite of the company's sudden dissolution in 2003. M.U.G.E.N. may be the best kept secret of the gaming community!
I collected over 2500 characters for M.U.G.E.N. in just three weeks!
M.U.G.E.N by The D August 11, 2006
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.
M.U.N. by Strokes fan February 1, 2004
A 2D fighting game engine, which can (in theory) be customized easily by adding new characters, backgrounds, sounds, and HUD elements (energy gauges and such).

The theory comes from the fact that the majority of M.U.G.E.N's character creators are whining bitches who lack any ability to share.

Apparently, taking a character and hosting it on your own site (known as warehousing) is an unimaginable wrong that you should be flogged for, even if you credit the character's 'creator'. Saving the 'creator's' bandwidth, and alleviating the need for people to spend hours wading through a million broken links and badly-designed sites in a multitude of languages is something that should never be done under any circumstances.

People often cite Elecbyte's discontinuing development of the software as the reason that the M.U.G.E.N community all but died. A little known fact is that the people who should have been the ones to keep it alive and fresh with new content actually killed most people's interest in the 'scene' by being possessive, whiny little bitches who decided that the best way to do justice to the concept of a nearly infinitely costomizable figting engine would be to do whatever they possibly could to stop new content from reaching people.
Man, M.U.G.E.N blows - infinitely customizable, and no-one wants to let people use the characters they stole.
M.U.G.E.N by Ulysses Wolfe November 8, 2008
More from Urban Dictionary

board chow 

A)
The Crud that collects under the keys in a keyboard. Usually more severe in the keyboards of programmers and webmasters as they tend to spend a lot of time at the the computer and thus eat at their desk. Mainly affecting IBM Model M (clicly) style boards.

B)
Can also be used to gross out Non-Techie people
A)
Bill: want to go to the club?
Bob: No, I've got to clean out my board chow, keys are starting to stick.

B)
Bill: Want to go out to get a bite?
Bob: No, i am just going to have some of my board chow/
Bill: Whats' that?
Bob: The food scraps that collect in my keyboard; Want some?
Bill: *GAG* *HURL* *GAG*
board chow by BinaryHackerMan September 3, 2007
Word of the Day on August 26, 2026

young pup 

a young person, a young adult in their late teens/early 20s.
Ah, you're just a young pup at 23!
young pup by the dog May 30, 2006
Word of the Day on August 25, 2026
West Midlands slang word for rockers, bikers, greasers etc. In the late 1980s it was used by the UK music press to refer to a specific scene centered around the bands Pop Will Eat Itself and Crazyhead. The term never found favour with readers of 'the inkies' (Sounds, Melody Maker and the still extant NME) and was soon dropped. Now often used in predominantly working-class areas of the midlands and the north to mean someone who listens to rock-derived music and/or dresses in a manner that suggests they affiliate themselves with rock music of some kind.
Some grebo passed with Sabbath playing on his stereo.
The Poppies are at no. 17? God, a grebo band in the charts!
They're playing nu-metal now, bloody grebos!
grebo by cactuscat September 15, 2006
Word of the Day on August 24, 2026

TikTok Farlands

TikTok Farlands is a term to refer to videos that you see after scrolling for a long time. These videos can potentially be disturbing, or weird. Said videos can also have low likes, or low comments.
“I reached the TikTok Farlands bro
Word of the Day on August 23, 2026

mormon assault vehicle

another term for a station wagon, mini-van, or any other kind of vehicle that is targeted at the "family" demographic(also M.A.V.)
"Tactical advantages aside, the M.A.V. is top of the line for the holy warrior troop transport manufactured by the Church of Latter Day Saints Military Industrial Complex. Also great for family trips...to heathen lands."
mormon assault vehicle by KVRX January 10, 2005
Word of the Day on August 22, 2026

Shakira Law 

A version of "Sharia Law" that Reform Ltd supporters tend to refer to, often by mistake.
Richard Tice of Reform now lives in Dubai, under Shakira Law, although telling Brits that we should worry about it
Shakira Law by Reformltd February 16, 2025
Word of the Day on August 21, 2026

Overstand 

To understand a topic or statement to the highest extent.
Leroy, after being told the tenth time by his sister, did overstand her idea of robbing the 7-11.
Overstand by Elf Eater March 23, 2003
Word of the Day on August 20, 2026
Next