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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
Related Words
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

radxcore 

basically someone who is really, really rad or awesome. they are most often seen as better than rad people and better than hXc people
OMG that person is so radXcore, i wish i was them (points at radXcore person)
radxcore by radXcore January 3, 2009

RadioCore 

A song someone will listen to if it's playing on a radio station, but will never willingly seek out/listen to it on streaming services/physical media.
Man 1: Hey you heard that new song by Imagine Dragons?
Man 2: Oh yeah, it's not bad but i would never add it to my playlists or anything, it's complete RadioCore tbh.
RadioCore by MrSnackmix June 29, 2018
holy crap thats so radcore to the fully full on hardcore max extreme.
radcore by Ashley November 28, 2004