Radtastic

(adj) Something so great, or tremendous, and unbelievable that it supersedes all other synonyms of both good and extraordinary.

Although she was nothing more than an iconoclastic misanthrope, she had to admit that her adversary's discovery was radtastic.

by Bradley Darren Davidson November 14, 2006

Radtastic

The most rad'st thing that can come up to mind

Dang T.A.K is like the most Radtastic skate crew out there man!

by Devin Starr May 15, 2009

Radtastic

something so fricken cool you couldm't even use the normal word "rad" to describe it!!

that was SO radtastic!

you are very radtastic

by asdfcodyjkl; July 19, 2008

Radtastic

Cooler than cooler but not as cool as awesomesauce

"That was radtastic"

by Penispenispenis69 March 25, 2020

Radtastic

To be Incredibly amazing, both RADical and fanTASTIC at the same time.

Bob: Hey, Guess what cindell, it's friday.

Cindell: AGAIN??? ARE YOU SERIOUS??

Bob: yep.

Cindell: OH MAN, THAT's SO RADTASTIC, I HARDLY KNOW WHAT TO DO WITH MYSELF!!

by Cindell Corbeil November 20, 2007

Radtastic

Extremely rad.
Really "cool".
Amazing.

Sarah is radtasic.
Ashley, that stunt was so "rad". Radtastic
Tonight is going to be so radtsatic.
Tonight is going to be so rad.

by Holly. October 07, 2007

radtastic

Rad and fantastic combined making a force to be rekoned with. If you are radtastic you are the best.

That movie was so radtastic i bet it will get great reviews

by sctso April 28, 2003