List of unprecedented synonyms and unprecedented related words.
beguiling, bewildering, enigmatic, exceptional, extraordinary, fabulous, fantastic, fascinating, incomprehensible, inconceivable, incredible, indescribable, ineffable, legendary, marvelous, miraculous, mythical, noteworthy, outlandish, passing strange, phenomenal, portentous, primary, prodigious, prototypal, puzzling, rare, remarkable, sensational, strange, striking, stupefying, stupendous, uncopied, unduplicated, unexampled, unheard-of, unimaginable, unimitated, unique, unparalleled, unreproduced, unspeakable, wonderful, wondrous