a.

1. 乖張易怒的；性情暴戾的
   You have to learn to deal with fractious children if you want to be a teacher.

   如果你想為人師表的話，你必須學會如何對付性情乖張的小孩。

2. 難以對待的；難以捉摸的
   Trump can be very fractious when it comes to international negotiations.

   在國際談判方面，川普可以說是非常難以捉摸的。

adj.

1. easily irritated.
2. difficult to control.