peremptoriness

noun

1. (uncountable)The quality of being peremptory

   “Mrs. Stannidge thereupon said with a considerate peremptoriness that she and her mother had better take their own suppers if they meant to have any.”

   “For suddenly the drum beat to quarters, which familiar sound happening at least twice every day, had upon the present occasion a signal peremptoriness in it.”