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.

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.

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'

Slang and/or abbreviation for the word "radical."

Something that is cool, or very neat.

awesome, cool, great, diffrent, nice

it's like saying über cool.