The Collaborative International Dictionary of English v.0.48:

Surprise \Sur*prise"\, v. t. [imp. & p. p. Surprised; p. pr. &
   vb. n. Surprising.] [From Surprise, n.: cf. F.
   surprendre, p. p. surpris.]
   1. To come or fall suddenly and unexpectedly; to take
      unawares; to seize or capture by unexpected attack.
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            Fearfulness hath surprised the hypocrites. --Isa.
                                                  xxxiii. 14.
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            The castle of Macduff I will surprise. --Shak.
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            Who can speak
            The mingled passions that surprised his heart?
                                                  --Thomson.
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   2. To strike with wonder, astonishment, or confusion, by
      something sudden, unexpected, or remarkable; to confound;
      as, his conduct surprised me.
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            I am surprised with an uncouth fear.  --Shak.
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            Up he starts,
            Discovered and surprised.             --Milton.
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   3. To lead (one) to do suddenly and without forethought; to
      bring (one) into some unexpected state; -- with into; as,
      to be surprised into an indiscretion; to be surprised into
      generosity.
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   4. To hold possession of; to hold. [Obs.]
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            Not with me,
            That in my hands surprise the sovereignity. --J.
                                                  Webster.
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   Syn: See Astonish.
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WordNet (r) 3.0 (2006):

surprised
    adj 1: taken unawares or suddenly and feeling wonder or
           astonishment; "surprised by her student's ingenuity";
           "surprised that he remembered my name"; "a surprised
           expression" [ant: not surprised, unsurprised]