A old word that was used to describe something excellent, great and like everyone else said on here, 'cool'.
That was like, TOTALLY rad dude!
by ??? August 05, 2003
Acronym for Random Act of Douchebaggery. An act in which the one who participates can be tagged as a douchebag.
That guy's move cutting me off was RAD.
by RocketSled October 16, 2009
awesome, cool, great, diffrent, nice
Hey Chance you look rad with that new jacket.

That movie we saw lastnight was rad.
by Lady Gretch (gretchen lyn) November 08, 2005
probably used by the Z-boys (and me) to expess extreme delight at some completly, outstanding, overpoweringly decent. Also probably started by stoned aussie surfers from the stoneage, along with narly, bogus, dude and surfing
Livi skatepark is RAD as fuck man!
by SanJ Street August 03, 2003
Short for "radical," it's a word that needs to come back. Often used in conjunction with dude.
Dude, I can't believe that you memorized the periodic table. That's a totally rad waste of time.
by Quam Celerrime August 06, 2008
Computer term: "Rapid Application Devolopment" Software used to devolop software easily and fast. RAD software usually does most of the work for you.
See term 2 of IDE.
Delphi 7 is RAD software.
by Alex January 16, 2004
awesome,wonderful but could be risky
(After a motorbike ride) That was so rad!
by gaur August 16, 2012

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