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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.
mad by SVex January 17, 2005
Related Words
MAD is an American humour magazine with comics. The name should always be capitalized as "MAD" to distinguish with any other Mads or the word (adjective) "mad". MAD is an acronym from "Mesh takes a D", in which "mesh" is "#" (number sign) and "to take a d" is to "commit a suicide".
Bon: "People oftentimes wonder what that "E" in the middle of the name of Alfred E. Neuman – the cover boy of MAD magazine – stands for and what happened to his missing tooth."
Connie: "No, they don't."
MAD by Burt Milhorse Eriksson April 8, 2021
My brother is mad. He is mad that his definitions on urban dictionary got rejected.
I'm writing this to piss him off.
My bro is mad. It is funny.
Mad by Anonymouse🐀 December 15, 2018
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.
MAD by Dasaru January 21, 2011
1: really or extremely
2: alot
"That kids mad cool"

"i got mad money"
mad by sarah April 2, 2003
(adj.) an adjective used to enhance a noun.
1- dude, you got skills.
2- dude, you got mad skills.
mad by will holland January 17, 2004
More from Urban Dictionary
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
According to the boffins downstairs, the murderer used a serrated blade.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026

Pee Calculus

When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
Pee Calculus by anorlondo October 1, 2026
Word of the Day on October 2, 2026
Literally "dirty" pronounced with a West Indian accent. Can also have a positive connotation, for example Sean Paul's album title "Dutty Rock".
"The girl is pretty but she corrupt and dutty!"

or, in a positive usage:

"Booya! That freestyle was dutty!"
Dutty by J Hall April 3, 2003
Word of the Day on October 1, 2026
korean word for madam, older woman
Ajumma wait a moment
Ajumma by aintnotinbutnice July 5, 2009
Word of the Day on September 30, 2026

Slop Grenade

When someone uses AI to generate a large document, slide deck, or piece of code/software and tosses it over the fence for you to deal with.
Chad: Hey Brent I sent you the new backend API change to review, it’s only 100 files changed.

Brent: he just tossed me a slop grenade
Slop Grenade by Joe Squid September 28, 2026
Word of the Day on September 29, 2026
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).
After we broke up, he was floxi to me.
floxi by Dr. Geek May 13, 2009
Word of the Day on September 28, 2026
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