oof

interjection

ˈüf 

—used to express discomfort, surprise, or dismay

I once watched a highlight reel of Tyson knockouts with a roomful of intoxicated medical students who punctuated every blow with phrases like "Oof! I can't believe that dude's sternum didn't just collapse."

—Diane Vadino

Word History

First Known Use

1777, in the meaning defined above