hard-ass

or hard·ass

[hahrd-as]

noun Slang: Vulgar.

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. 2018

Examples from the Web for hard-ass

Contemporary Examples of hard-ass

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