Top Definition
Mandatory Ugly Friend
Every woman has a MUF
作者 Junkyardjimbo88 2003年6月27日
An acronym for the very serious disorder: Messed Up Face Syndrome.
"Ew that was the ugliest girl I've ever seen in my life."
"Yeah, she has a bad case of MUFS"
作者 elly zass 2009年11月28日
In radio transmission Maximum Usable Frequency (MUF) is the highest radio frequency that can be used for transmission between two points via reflection from the ionosphere ( skywave or "skip" propagation) at a specified time, independent of transmitter power. This index is especially useful in regard to shortwave transmissions.
I am trying to reach Europe on the 10-meter band, but the MUF 20.25MHz
作者 Klinkou 2015年1月14日
someone who does not know the meaning of the word is a muf, until you know what it means you are one.
fred: "what's a muf"?
george:"you're a muf"
作者 youre a muf 2010年11月21日
Material Unaccounted For
"The missing nuclear waste is MUF"
作者 Randy Piper(aka Shit Goose) 2005年3月21日

Abbrieviation of "Make-Up Failure".

For those girls who slap on the bronzer, and foundation, for those girls who have abnormally rosey cheeks, and for those girls who have eyes as black as the night.

Girl 1: HAHAHA Did you see Jenny today?

Girl 2: Yeah, i mean what a MUF!


Boy 1: I fancy some girl in my maths class... but i don't know what to do, she's such a MUF.

Boy 2: NO MAN, you can do so much better.
作者 MCLIV 2010年1月14日
Multi User Forth

Advanced coding language used on MUCKs. When used by Zirik, it causes flooding.

MUF is frequently used when MPI proves insufficient to perform a desired function, as it has much greater capabilities. However, most consider it more difficult to learn.
Zirik wrote a program for underwater realms in MUF and inexplicably drowned the entire population of the MUCK.
作者 Zirik 2005年4月18日



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