un·scru·pu·lous /-ˈskrupjələs/
  (a.)無道德的,不謹慎的,狂妄的
  Un·scru·pu·lous a. Not scrupulous; unprincipled. -- Un*scru*pu*lous*ly, adv. -- Un*scru*pu*lous*ness, n.
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  unscrupulous
       adj 1: without scruples or principles; "unscrupulous politicos who
              would be happy to sell...their country in order to
              gain power" [ant: scrupulous]
       2: lacking honesty and oblivious to what is honorable [syn: dishonest]