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The most dreadful word in nuclear physics.
OOPS!!! (Chernobyl, 26.04.86; Chelyabinsk-40, 29.09.57; Three Mile Island, 28.03.79; etc)
oops by ex-physicist May 13, 2008
The last thing you want to hear from a surgeon.
Medical Intern: Now, I just make an incision in the -- oops! I forgot the anesthetic!
oops by PresterJohn June 4, 2011
Something people say when they screw up
Parent to child: WHAT THE HELL DID YOU DO THAT FOR?!?!?
child: ..oops..
oops by Hannah Banana April 1, 2004
(v) to engage in sexual intercourse with the intent, unbeknownst to the partner, of causing a pregnancy. This word is used specifically in instances where one partner believes that birth control is intact or being used, while the other has damaged/removed birth control without the knowledge or consent of the first partner, for an ulterior motive such as forcing the partner into a shotgun wedding situation as a means of securing the partner as a mate, or producing a child that the partner does not yet/ever want. This may include but is not limited to intentionally missing the Pill, removing diaphragms, or poking holes in a condom. Although more commonly done by women, men have also engaged in oopsing.
Oopsing involves an obscene abuse and betrayal of the partner's trust, not to mention the objectification of the partner into someone whose plans to remain childless, for whatever reason, no longer matter. Oopsing is thusly one of the most disgusting acts imaginable, and ought to be a prosecutable offence.
'How could you oops your lover? Shame on you for stooping to such betrayal!'
oops by Child Hatter May 8, 2003
interjection

1. (used to express mild dismay, chagrin, surprise, etc., as at one's own mistake, a clumsy act, or social blunder.)

2. Word that comes to mind after living a YOLO/ "Cause I'm young lifestyle" and it catches up to them.

3. Word used to describe in hindsight of ones mistakes.
Facebook Status: 6:31pm-Parents are out of town, party at my place, BYOB and tree #YOLO

10 or so mip's later

Facebook Status: 11:15pm OMG Party shut dwn by da po po's. #OOPS
OOPS by RustyPineapple August 29, 2012
What you say right as you realize that you have no chance of becoming the U.S. President anymore.
"Oops." -Rick Perry
oops by Ninjablonde25 November 10, 2011