Etymology 1 
- A sound mimicking the loss of air, as if someone's solar plexus had just been struck.
Etymology 2 
From ooftish or possibly connected with French œuf (“egg”)
- (UK, slang, dated, c. 1850 - c. 1940) Money.
- 1911–1912, published 1916, Gilbert Parker, The World For Sale, book 2, chapter 10 (Gutenberg ebook, archive.org ebook):
- What's he after? Oof—oof—oof, that's what he's after. He's for his own pocket, he's for being boss of all the woolly West. He's after keeping us poor and making himself rich.
Derived terms