mischievousness

1. 'Urchin', with its connotation of mischievousness, may not be a particularly apt word. urchin
   有淘气的含义，可能不是一个特别恰当的词。
2. Very neat in appearance, he had that happy-to-be-alive attitude that made even his occasional mischievousness delightful.
   他外表干干净净，是个乐天派，所以即便是他偶尔的调皮捣蛋，也依然讨人喜欢。

noun

1. reckless or malicious behavior that causes discomfort or annoyance in others

   Synonym:    mischiefmischief-makingdeviltrydevilrydevilmentrascalityrogueryroguishnessshenanigan

2. the trait of behaving like an imp

   Synonym:    impishnesspuckishnesswhimsicality

3. an attribute of mischievous children

   Synonym:    naughtinessbadness