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An abbreviation of 'radical'--a term made popular by the Teenage Mutant Ninja Turtles. Still primarily used by people on the West Coast who find words like 'cool', 'awesome', and 'tight' to be tired and overused; 'rad' is generally considered to be a much higher praise than the aforementioned superlatives. Also used as a general expression of awe.
"Those are some rad shoes."
"Oh, RAD."
by Prettykitty July 26, 2003
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really cool, but in a more subtle way. as opposed to extreme or awesome. one of the highest compliments you can give someone. being rad is like being cool without having to work for it. it's like a natural coolness.
she seems quiet at frist, but she's actually pretty rad when you get to know her.

these pro skaters have it all wrong, it should be less extreme and more rad, like it was back in the day.
by electric jim August 15, 2004
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When awesome and cool just aren't enough to describe something.
Aj: "We're awesome!"
May: "No we're not, we're better! We're fucking Rad maan!"
by MerMaydens February 07, 2014
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Abbreviation of 'radical', used to imply something different and interesting (i.e. a break from what is boring and ordinary).
'Fancy a pizza with 10 toppings?'
'That's rad, man!'
by Flaze3 May 19, 2009
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Shortend form of the word radical, a 100% slang word from the 1980's, used mostly in the past by people from Generation-X (people born in the late 60's early 70's) to describe something that's cool.

Apperantly lots teens today are starting to use it as well, most of 'm probably don't even know that it is a 80's slang word and if they do know, they probably are pretending that it's something of their generation.
That's a rad bike you've got.
by mitrooper September 20, 2009
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the word used to describe something when u must describe it as positively as possible. Rad is the strongest alternative, and stronger than the word, 'cool'
Sex and Pizza are rad
by Captain|2ad November 24, 2002
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When you text your crush and tell them you like them and they say they don't like you with a five paragraph text. All you have in mind is rad.
You: Hey I like you do you want to go out?
Crush:Sorry I don't like you but could we still be friends? I don't want to hurt your feelings .
You:....Rad.......
via giphy
by nimnimjim November 29, 2016
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