Peremptory – Expected to be obeyed without question
Per empty (peremptory) can, you get 10p. Now go and get some more. I expect you to obey me without question.
Examples of peremptory in a sentence
The general gave the troops a peremptory order they had to obey.
The prison guard spoke to the inmate in a peremptory tone.
In a peremptory tone, the flight attendant told the passenger to either fasten his seatbelt or get off the plane.