although she was nothing more than an iconoclastic misanthrope, she had to admit that her adversary's discovery was 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" What is the definition of "radtastic"?