shadiness ['ʃeɪdɪnɪs]

例句:

• They acted with such obvious shadiness that they were instantly recognizable.
  他们行事如此可疑,以至于马上就能被发觉.
  
• You look like very shadiness.
  你看上去非常可疑.
  
• There's too much shadiness to take good photographs.
  阴影太多,很难拍出好照片.