seedy       
adjective uk/ˈsiː.di/ us/ˈsiː.di/
 破旧的,褴褛的;肮脏的;下流的
looking dirty or in bad condition and likely to be involved in dishonest or illegal activities
  a seedy hotel 污七八糟的宾馆 
 He didn't like the look of the seedy characters who were hanging around outside the bar. 他不喜欢那些龌龊家伙的样子,他们总是在酒吧外面游荡。 
 Synonyms: scruffysleazysqualid (DIRTY)