radical 

A word used by people over the age of 30 in an attempt to sound cool, usually resulting in the opposite.

Jim: (to friend) Hey check it out I got a new snowboard.

Jim's mom: (overhearing conversation) Yeah its totally radical.

Jim: OK you can go away now.

radical by shoop April 3, 2006

radical 

This word describes something that is considered very good.

That trick was totally radical dude!

radical by craig May 6, 2004

Radical 

Something that is freaking sweet.

Wow look at how radical he is.

Radical by Themagicbush April 1, 2015

radical 

something that is incredibly cool
a better word for 'awesome' or 'cool'

'wow you know kirstie?'
'yeah, she's fucking radical'

radical by fuckingradical November 2, 2012

Radical 

Radical, an extreme form of something. To be cool, to be rad

see "rad"

That guitar riff was radical as fuck man!
Dude, this pizza is radical.

Radical by Darrel March 20, 2003

Radical 

Awsome.

Jim-Do You Like My New Phone?

Amanda-Yeah, Its So Radical

Radical by dingdong123 June 11, 2009

radical 

when something is so tremendously keen that you must proclaim your observation of it being so.

"Gee! that Alienware Gaming System with optimal internal fiber optic lighting is RADICAL!!"

radical by Doodster December 13, 2006