Ratastic 

When something is cool or amazing followed up by a image of the Seth McFarland mouse from sing

That’s pretty Ratastic *sends image of Seth McFarland mouse from sing*

Ratastic by Mouse from sing fan September 23, 2023

Racktastic

Of or having a fantastic set of breasts

Good luvin, check her out...That chick's racktastic.

Racktastic by Brodyhill November 17, 2002

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

radtastic by sctso April 28, 2003

Rabbtastic

When someone is in a pill induced (Xanax, k-pin) daze, feeling mellow and happy about anything and everything going up, in the mean time not really knowing what is actually going on.

Bethany: hello john how are you doing today

Rabb: ..... (pause)... (pause).. oh hey, i am rabbtastic today how are you?

Rabbtastic by slave at the WRC July 7, 2010

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.

Radtastic by Bradley Darren Davidson November 14, 2006

Ragetastic 

A event, person, or thing that is so anger or makes people angry, it's fantastic.

I had finally caught 139 Pokemon, and then someone erased my game. It was ragetastic

Ragetastic by LLMARSUPIAL May 7, 2011

Raytastic 

A Name for something fantastic, said by a small Youtuber named RaymanFP12

That was a Raytastic intro!

Raytastic by Zaikiel Lime August 9, 2018