Wiktionary
hard-assed
a. (context vulgar English) Of a person who has a very difficult personality; a perfectionist.
Usage examples of "hard-assed".
Jelly played the role of the ingratiating patch with enthusiasm and enormous skill, and Lisle Kelsko pretended to be nothing more than a hopelessly hard-nosed, hard-assed, narrowminded, amoral, authoritarian, coal-country cop.