n.[U]

1. 证明为正当；辩护；辩解
   What can be said in justification of what he had done?

   能说些什么来为他做下的事辩护呢？

2. 正当的理由；借口
   There is no justification for his absence.

   他没有理由缺席。

n.

1. the action of justifying something.
2. good reason for something that exists or has been done:
   there's no justification for the job losses.