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Most predominantly used in the greater New York area, "mad" is an appropriate replacement for Northern California's "hella" and Boston's "wicked." In the common vernacular, it translates into "a lot" or "extremely." Can be used almost interchangeably with any of the above listed words.

For the most part, it means angry.
It's mad hot today.
She has mad problems.
by SVex January 17, 2005
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Wikipedia says:
A MAD Movie is a Japanese fan-made video, much like an anime music video (AMV), that generally originate from the Japanese website Nico Nico Douga. MAD can also describe the Japanese AMV community, although they can be anything from audio clips, edited pictures, to wholly original creations. MADs do not necessarily even need to be related to anime, though the more popular ones typically are. The term MAD (occasionally M@D) is thought to be a reference to the name of one of the original MADs, rather than a particular acronym for anything.
There are many MAD videos at the Nico Nico Douga website.
by Dasaru January 20, 2011
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1: really or extremely
2: alot
"That kids mad cool"

"i got mad money"
by sarah April 02, 2003
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(adj.) an adjective used to enhance a noun.
1- dude, you got skills.
2- dude, you got mad skills.
by will holland January 17, 2004
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a person youd love to have living under your bed, good company at the very worst of times. someone who undertands what goes thru my head, and knows more about me than i do!
mads get out from under my bed and speak to me!
by Phobia August 30, 2004
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New York and New Jersey's way of saying very, it is similar to hella, wicked.
I had mad amounts of homework in school.
I hate that punk, he's mad gay.
Dude, that chick is mad hot.

etc.
by Jersey kid November 29, 2007
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1. crazy, insane, demented, nuts, deranged, out of one's mind, bonkers, lost one's marbles.

2. angry (usually limited to the United States)

3. extremely, very
-"I get up before dawn, go to bed at midnight, work until I'm half-mad, and what do I get for it?!"

-"Ophelia's gone mad and she's run off! We have to catch her!"

-"Wow, your mom's really mad!"

-"This book is mad boring!"
by Lorelili April 05, 2008
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