Skip to main content
Urban Dictionary Merch
Your favorite words on things you can wear, drink from, read, or give to a friend.
The Urban Dictionary Store sells gifts you’ll have to explain.
1. Something that is rad to the core. A description of an action or thing which is especially impressive/fucking rules.
Did you see that guy snorting coke out of that strippers ass crack? That was radcore.
radcore by Chris Westwood April 12, 2005
A term used by those who struggle to define the genre of the American Rock Band Falling In Reverse. Due to their diverse sound that encompasses Post-Hardcore, Metalcore, Pop-Rock, Pop-Punk, Rap-Metal and Electronica. Often releasing songs that fuse multiple genres at once.
Youtube Comment: Ronnie is his own genre now. You can’t label him with just one.
Reply: Yes you can. Radcore.
Radcore by An Aussie Emo Boi April 8, 2022
A combination of radical & hardcore positively expressing something extreme and vulgar. Otherwise just a replacement for very cool & words to that effect.
Your jam was radcore!
radcore by erratika June 18, 2004
Redkore symbolizes anything in life. It can be anything someone wants it to be. It is a way to express ones emotion or desire in a way that is un-describable. Redkore can be pleasure,joy,sadness,extremities, hope, tragedy...you name it. Therefore redkore is born.
"yo man my mom walked in on me when i was doing Redkore now i gotta get a job"

"You are not going to believe what happend. Sally gave me a redkore all night it was amazing."
Redkore by Bruce wayne December 10, 2013
holy crap thats so radcore to the fully full on hardcore max extreme.
radcore by Ashley November 28, 2004
adj: anything that is hardcore, yet totally cool.
Michael Scofield's tattoos in Prison Break are radcore!
Radcore by Subba Slut November 18, 2007
More from Urban Dictionary

square grouper

Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."
square grouper by slipsheet November 6, 2004
Word of the Day on October 7, 2026
A girl who does ballet and only talks about ballet. Her schedule is filled with dance classes which does not allow her to do any other activity.
"Hey, do you know that girl Sally?"

"Yeah, she's kind of annoying. All she ever talks about it ballet."

"Wow, what a Bunhead."

"Hey Sally, you want to hang out this weekend?"
"I can't, I have dance."
"You're such a Bunhead."

"Yeah... I know."
Bunhead by Jen00 October 24, 2014
Word of the Day on October 6, 2026

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
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
Load more