Look sharp

from 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}]

from The Collaborative International Dictionary of English v.0.48

Sharp \Sharp\, adv.
   1. To a point or edge; piercingly; eagerly; sharply. --M.
      Arnold.
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            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.]
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