Top Definition
To be more radical then normally thought possible by non-rad people.
My brother is the raddest person EVER.
by TheLastMinute August 12, 2004
To be thought of as pretty much totally amazing; awesome.
My friend said I was the raddest guy ever!
#awesome #rad #amazing #uncool #lame
by AquaFresh13 September 19, 2009
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