A Word used to call something Cool.
*person 1* dude that is so Rad!
*person 2* For real!
Both a dumb 80's slang word for radical and also a terrible BMX movie also from the 80's.
Nick: Bro that dude just did a 360 flip off the quater pipe into the seafoam!
Beans: bro that was gnarly and RAD!
When you are just so fantastic and cool that you have to find another way to express that awesomeness
Reef: "WOW you are so rad!"
You: "OMG thank you so much!"
Awesome people replace all positive adjectives with the word rad. Rad is when you mean awesome and epic and cool just all in one go. Nerds say that rad isn't a real word, but that is because it is not in their 10000000 page chemistry books. If you say rad non stop, like I do, you're rad.
When something is like going great.
Stacy and Dev were so rad until she changed schools.