n.

1. 頑皮，淘氣；胡鬧，惡作劇[U]
   What mischief is he up to?

   他在搞什麼惡作劇？

2. 損害，傷害，危害[U][S1]
   The frost did much mischief to the vegetables.

   霜凍使蔬菜受到了嚴重的損害。

3. 頑皮的孩子，淘氣鬼[C]
   The boy is a regular mischief in school.

   這男孩在學校裡是一個十足的淘氣鬼。

4. 損害的根源，禍根[S]
   He is a real mischief to his family.

   他給家人招惹禍事。

5. 不和，爭執[U]
   She tried to stir up mischief among the other pupils.

   她試圖在其他學生之間挑起糾紛。

n.

1. playful misbehaviour or troublemaking.
2. harm or trouble caused by someone or something.
3. Law  a wrong or hardship which it is the object of a statute to remove or for which the common law affords a remedy.