peremptory

/pəˈrɛm(p)təri/

Peremptory comments are like orders. If you say something in a peremptory manner, you want people to stop what they’re doing and do what you say. Peremptory comments put an end to a discussion, and that’s final!

The word peremptory comes from the Latin peremptorius for “decisive, final.” Trace it further and find that peremptor means "destroyer," from perimpere for "destroy, cut off.” Basically, peremptory commands destroy the conversation. They are given with an air of authority, and they are often barked. In the courtroom, peremptory orders are not open to appeal; they’re final. Outside of the courtroom, a peremptory manner is just plain rude.

Definitions of peremptory

1. adjective

   putting an end to all debate or action
   “a peremptory decree”

   synonyms:

   decisive

   determining or having the power to determine an outcome
2. adjective

   not allowing contradiction or refusal
   “spoke in peremptory tones”

   “peremptory commands”

   synonyms:

   imperative

   requiring attention or action
3. adjective

   offensively self-assured or given to exercising usually unwarranted power
   “a swaggering peremptory manner”

   synonyms: autocratic, bossy, dominating, high-and-mighty, magisterial

   domineering

   tending to domineer