a person who follows rules and regulations meticulously and enforces them without exceptions.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use hard-ass in a sentence
And Ford delivers another impressive performance as the hard-ass, take-no-prisoners colonel; like a hardened, grizzled Han Solo.Harrison Ford Discusses ‘Ender’s Game,’ Drone Warfare, Vietnam, and Playing A Badass President | Marlow Stern | October 28, 2013 | THE DAILY BEAST
“You don't see many trade ads saying ‘We need the next Rush Limbaugh—we need a right-wing hard ass’” adds Bloomquist.