radtastic 

amazing; of top-notch quality.

Dude, last night's shenanigans were radtastic, were they not?

radtastic by AlanJohn January 21, 2008

radtastic 

to be rad, and fantastic (not in a gay way)

man that game the other day was radtastic

radtastic by 1337solidsnake117 May 16, 2007

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!!

Radtastic by Cindell Corbeil December 20, 2007

rajastical 

a word commonly used to define someting weird, uncommon, or awesome in size or shock value.

Yeah, it was rather rajastical when Lauren beat up the best ninja in the world.

rajastical by lauren mace May 22, 2006

RADtastic 

a word derived from the words "RAD"(commonly all capitalized) and "fantastic", in a way of saying better then RAD or Fantastic but in the sense of being rad or fantastic
RADtastic mainly used in small towns or areas made up in the city of Bellevue Nebraska while describing SKA music
a commonly used phrase with RADtastic is
"RADtastically SKAwesome"

"Dude, thats RADtastic!"
"RADtastically SKAwesome

RADtastic by RADtastically SKAwesome December 10, 2008

radtasticallybabalishious 

incredibly awesome or otherwise amazing.

cd players are so freeeeeeekin radtasticallybabalishious.

radtasticallybabalishious by RAWR its Poncho April 19, 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.

Radtastic by Holly. October 23, 2007