adjective

extraordinary, especially extraordinarily large.

fabulous riches

tremendous,stupendous,prodigious,phenomenal,extraordinary,remarkable,exceptional,astounding,amazing,astonishing,fantastic,breathtaking,overwhelming,staggering,unthinkable,inconceivable,unimaginable,incredible,unbelievable,unheard of,unthought of,unspeakable,unutterable,untold,ineffable,implausible,improbable,unlikely,impossible,undreamed of,beyond one’s wildest dreams,beyond the realm of reason,mind-boggling,mind-blowing,amazeballs