Source : Webster's Revised Unabridged Dictionary (1913)

Astonishment \As*ton"ish*ment\, n. [Cf. OF. estonnement, F.
   ['e]tonnement.]
   1. The condition of one who is stunned. Hence: Numbness; loss
      of sensation; stupor; loss of sense. [Obs.]

            A coldness and astonishment in his loins, as folk
            say.                                  --Holland.

   2. Dismay; consternation. [Archaic] --Spenser.

   3. The overpowering emotion excited when something
      unaccountable, wonderful, or dreadful is presented to the
      mind; an intense degree of surprise; amazement.

            Lest the place And my quaint habits breed
            astonishment.                         --Milton.

   4. The object causing such an emotion.

            Thou shalt become an astonishment.    --Deut.
                                                  xxviii. 37.

   Syn: Amazement; wonder; surprise.

Source : WordNet®

astonishment
     n : the feeling that accompanies something extremely surprising;
         "he looked at me in astonishment" [syn: {amazement}]