surprise party

from The Collaborative International Dictionary of English v.0.48
Surprise \Sur*prise"\, n. [F. surprise, fr. surprendre, surpris;
   sur over + prendre to take, L. prehendere. See {Sur-}, and
   {Prehensile}.]
   1. The act of coming upon, or taking, unawares; the act of
      seizing unexpectedly; surprisal; as, the fort was taken by
      surprise.
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   2. The state of being surprised, or taken unawares, by some
      act or event which could not reasonably be foreseen;
      emotion excited by what is sudden and strange; a suddenly
      excited feeling of wonder or astonishment.
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            Pure surprise and fear
            Made me to quit the house.            --Shak.
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   3. Anything that causes such a state or emotion.
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   4. A dish covered with a crust of raised paste, but with no
      other contents. [Obs.] --King.
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   {Surprise party}, a party of persons who assemble by mutual
      agreement, and without invitation, at the house of a
      common friend. [U.S.] --Bartlett.
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   Syn: Wonder; astonishment; amazement.
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