PEREMPTORY

__//**Peremptory**//__ //adj.// not allowing refusal or delay; imperative

 syn:  authoritative, unconditional ant: roundabout; passive; equivocal

The guard issued a peremptory warning to step away from the fence or be fired upon.

The dog didn't stand a chance in court against the peremptory jury made up completely of cats; who would have no mercy on a canine like him. Cameron Roman