archness

1. 'How could you be so treacherous!'said Tess, between archness and real dismay, and getting rid of his arm by pulling open his fingers one by one, though at the risk of slipping off herself.
   “你怎么能这样骗人呀！”苔丝半是狡诈半是真正害怕地说，她冒着自己摔下马去的危险，一个一个地扳开他的手指头，从他的搂抱中摆脱出来。

noun

1. inappropriate playfulness

   Synonym:    impertinenceperkinesspertnesssauciness