trifle with someone/something 
phrasal verb with trifle verb uk/ˈtraɪ.fəl/ us/ˈtraɪ.fəl/
  formal or old-fashioned      
 戏弄;怠慢;小看
to treat someone or something carelessly or without respect
  He trifled with her affections (= feelings). 他玩弄她的感情。 
 As you know, Caroline O'Neill is not a woman to be trifled with. 你也知道,卡罗琳‧奥尼尔这个女人可怠慢不得。