Precluding debate or expostulation; not admitting of question or appeal; positive; absolute; decisive; conclusive; final.
- Putting an end to all debate or action: a peremptory decree.
- Not allowing contradiction or refusal; imperative: The officer issued peremptory commands.
- Having the nature of or expressing a command; urgent: The teacher spoke in a peremptory tone.
- Offensively self-assured; dictatorial: a swaggering, peremptory manner.