n .
a harmful action ; an ill turn 해를 끼치는 행위 ; 나쁜 짓

• Inez did a _____ to her parents by informing the police that they were growing marijuana in their garden.
• The reviewer did a grave _____ to the author by inaccurately describing what his book was about.
  작가의 책에 대해 정확하지 않은 내용을 서술함으로써, 그 평론가는 작가에게 중대한 해를 끼쳤다.