prodigious

I (amazing) adjective abnormal, anomalous, astonishing, astounding, bizarre, curious, dumbfounding, exceptional, extraordinary, fantastic, freakish, grotesque, impressive, inconceivable, incredible, indescribable, marvelous, miraculous, noteworthy, out of the common run, out of the ordinary, outlandish, overwhelming, peculiar, phenomenal, queer, remarkable, renowned, singular, startling, strange, striking, supernormal, surprising, unaccountable, unaccustomed, uncommon, unconventional, uncustomary, unexampled, unfamiliar, unheard of, unimaginable, unique, unprecedented, unthinkable, weird, wonderful, wondrous II (enormous) adjective astronomical, big, colossal, cydopean, elephantine, gargantuan, giant, gigantic, grand, great, Herculean, huge, immanis, immense, ingens, large, leviathan, mammoth, massive, mighty, monster, monstrous, monumental, sizable, stupendous, substantial, terrific, thumping, titanic, towering, tremendous, vast, whopping III index far reaching, noteworthy, portentous (eliciting amazement), special, unusual