a.

1. 斷然的，不容置辯的
   There was a peremptory note in his voice.

   他說話的聲音裡有一種不容置辯的口氣。

2. 專橫的；獨斷的
3. 【律】絕對的，強制的

adj.

1. insisting on immediate attention or obedience; brusque and imperious.
2. Law  not open to appeal or challenge; final.