mischief/ˈmɪstʃɪf/
n.1. 恶作剧What mischief are you up to?你在捣什么鬼？
2. 淘气；捣蛋Those boys have been up to mischief again; they've put water all over the floor.那些男孩又淘气了，他们把地板上弄得到处都是水。
3. 淘气鬼；捣蛋鬼You little mischief!你这个小淘气!／你这个小捣蛋
4. 伤害；弄坏；损害The mischief of the matter is that you didn't keep your promise to keep it secret这件事坏就坏在你没有遵守诺言保守秘密。