astonishing

(verb) affect with wonder. Synonyms: amaze, astonish, astound. Example: "Your ability to speak six languages amazes me!."

(adj) surprising greatly. Synonyms: amazing. Examples: "She does an amazing amount of work." "The dog was capable of astonishing tricks."

(adj) so surprisingly impressive as to stun or overwhelm. Synonyms: astounding, staggering, stupefying. Examples: "Such an enormous response was astonishing." "An astounding achievement." "The amount of money required was staggering." "Suffered a staggering defeat." "The figure inside the boucle dress was stupefying."