ras·cal /ˈræskəl/
  流氓,無賴,壞蛋,淘氣鬼
  Ras·cal, a. Of or pertaining to the common herd or common people; low; mean; base.  “The rascal many.” --Spencer.  “The rascal people.” --Shak.
     While she called me rascal fiddler.   --Shak.
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  Ras·cal n.
  1. One of the rabble; a low, common sort of person or creature; collectively, the rabble; the common herd; also, a lean, ill-conditioned beast, esp. a deer. [Obs.]
     He smote of the people seventy men, and fifty thousand of the rascal.   --Wyclif (1 Kings [1 Samuel] vi. 19).
     Poor men alone? No, no; the noblest deer hath them [horns] as huge as the rascal.   --Shak.
  2. A mean, trickish fellow; a base, dishonest person; a rogue; a scoundrel; a trickster.
  For I have sense to serve my turn in store,
  And he's a rascal who pretends to more.   --Dryden.
  rascal
       n 1: a deceitful and unreliable scoundrel [syn: rogue, knave,
             rapscallion, scalawag, scallywag, varlet]
       2: one who is playfully mischievous [syn: imp, scamp, monkey,
           rapscallion, scalawag, scallywag]