discourtesy [dɪsˈkɜ:rtəsi]

例句:

• I was amazed by their discourtesy and lack of professionalism.
  他们的无礼和不专业让我震惊。
  
• He was insensitive to all kinds of discourtesy.
  他脸皮很厚,对随便什么侮辱都不在乎.
  
• I must apologize for my discourtesy in arriving late.
  我要为迟到失礼而道歉.
  
• He apologised for his discourtesy but denied using the F-word or calling the policemen "plebs".
  来自THETIMES
• If you don't agree that the lack of at least a README is a fundamental discourtesy, that's fine--we can disagree on that point.
  来自ENGADGET