1. 
[syn: rush, hasten, hurry, look sharp, festinate]
The Collaborative International Dictionary of English v.0.48:
Sharp \Sharp\, adv.
   1. To a point or edge; piercingly; eagerly; sharply. --M.
      Arnold.
      [1913 Webster]
            The head [of a spear] full sharp yground. --Chaucer.
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            You bite so sharp at reasons.         --Shak.
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   2. Precisely; exactly; as, we shall start at ten o'clock
      sharp. [Colloq.]
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   Look sharp, attend; be alert. [Colloq.]
      [1913 Webster]
WordNet (r) 3.0 (2006):
look sharp
    v 1: act or move at high speed; "We have to rush!"; "hurry--it's
         late!" [syn: rush, hasten, hurry, look sharp,
         festinate]