leaving no opportunity for denial or refusal; imperative

a peremptory command.

imperious or dictatorial.

positive or assertive in speech, tone, manner, etc.

Law .

that precludes or does not admit of debate, question, etc.

a peremptory edict.

decisive or final.

in which a command is absolute and unconditional

a peremptory writ.

adjective

easy-going , indulgent , laid-back , lax , lenient , mild , moderate

adjective

absolute , arbitrary , assertive , autocratic , binding , bossy , categorical , certain , commanding , compelling , decided , decisive , dictatorial , dogmatic , domineering , final , finished , firm , fixed , high-handed , imperative , imperial , imperious , incontrovertible , intolerant , irrefutable , magisterial , obligatory , obstinate , positive , rigorous , severe , stringent , tyrannical , uncompromising , undeniable , authoritarian , masterful , overbearing , authoritative , harsh , rigid , urgent