Oof vs Oops - What's the difference?

As interjections the difference between oof and oops

is that oof is a sound mimicking the loss of air, as if someone's solar plexus had just been struck while oops is acknowledging a minor mistake.

As a noun oof

is money.

As an initialism OOPS is

object-oriented programming system.

oof

English

Etymology 1

(onomatopoeia)

Interjection

(en interjection)

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 (etyl)

Noun

(-)

Money.

* 1888 , , Colonel Quaritch V.C. ( archive.org ebook), page 232:

“Oh,” Johnnie was saying, “so Quest is his name, is it, and he lives in a city called Boisingham, does he? Is he an oof bird?” (rich)
“Rather,” answered the Tiger, “if only one can make the dollars run, but he's a nasty mean boy, he is.

* 1911–1912 , published 1916, , The World For Sale , book 2, chapter 10 ( Gutenberg ebook], [http://www.archive.org/details/worldforsaleano00parkgoog 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

* oof-bird * oofless * oofy

Anagrams

* foo English onomatopoeias

oops

English

Interjection

(en interjection)

Acknowledging a minor mistake.

Oops ! I left the lid off the ketchup.

Used sarcastically to acknowledge a major mistake.

''I just stepped on dog poo! Oops!

Oops, I didn't see you there.

Oops,... I locked my car keys inside the car.

Synonyms

* oopsy * uh-oh * whoops * whoops-a-daisy