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undergrounder 

a zit that is deep, with no white head, painful, and bulbous, it takes a long time to head up and is generally super annoying.
dude, i got a huge undergrounder on my forehead!
undergrounder by prot1a5 September 21, 2005

Underground Aussie Hip Hop

A non-commercialised non-profit Rap scene. A style of Australian rap music where rappers choose not to 'sell out' to Record Conpanies & instead produce their own Recordings whilst maintaining other forms of financial income.
Guy a) bro, u know any good Underground Aussie Hip Hop beats?

Guy b) yeah sus out #undergroundaussiehiphop on Instagram! Google Celebrity Pete Laan is a fan of that shit

Underground 

Un•der•ground (un’der ground’), n., adj.

1) A genre in music and other forms of media intended for an elite audience, that is often characterized by its high levels of originality and experimentation, and does not conform to typical standards, trends, or hypes as set by the popular mainstream media.
The mainstream media has a tendency to steal new ideas from the underground.
Underground by Essix April 16, 2005

Kosovo underground army. 

Kosovo made an underground army after a very lurcative deal with China and Kanye West is secretive leader of this cult and army. He was able to donate the money he got from donda to this army. it’s for the Albanian cause. Its main purpose was to protect and save humanity from any upcoming dangerous or even deadly disease may appear among us. Let’s look at covid-19, it’s a more deadly varions than the other covid viruses they used some Oslaedstechnology to help making the cure. The Main Oslaedstechnoligical was Alina West.
Person 1: hey, I’ve heard about the Kosovo underground army. What’s that?

Person 2: secretive place, we shall not talk about it.

Tony Hawk's Underground 

The greatest Skateboarding game ever created by mankind. At the time of writing this, the game is 10 years and 3 months old and is still widely known as the best Skating game ever made. If Neversoft had any sense, they would release it in the Xbox Live Marketplace.
Jimmy's Mom: So, Jimmy, what do you want for Christmas 2014? Xbox one, PS4...?
Jimmy: Nah, I saw a PS2 on eBay for $24.
Jimmy's Mom: Okay... why a PS2? I thought I bought you one of those, like, 12 years ago.
Jimmy: Yeah but it broke last year. I want another one so i can play Tony Hawk's Underground. It's sick.

Underground 

A movement or a group of people related to music, who do it not for the money, the notoriety or the fame, but for the love. They don’t promote, because they don’t crave popularity. They also don’t need to tell everyone about how underground they are because they aren’t really interested in labelling their own movement, they just do it, and if people enjoy it, great.
You ain't underground, you have a Facebook page advertsing your event fella....
Underground by dandesqueran June 8, 2015
More from Urban Dictionary
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
NYC people who migrate north to Quahog, RI to see the leaves in the fall.
New York and everyone from there can fornicate themselves with an iron stick.
leafers by ss++ February 8, 2005
Word of the Day on September 27, 2026
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