What does OP mean?

Other definitions of OP:
- An acronym that stands for "Overpowered". Often used within competitive video games to denote when something is imbalanced and too good.
- An acronym for "Opposite Prompt", referring to the stage right prompt corner on a theatre stage.
- Stands for "Out of Print", which is when a work is no longer being published.
- Military slang for "Observation Post", a structure used for surveying a field.
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How to use the term
OP:
I bet OP can't post pics, because it didn't actually happen like they claim it did on this forum.
That sword is so OP! It's completely unfair.
The last time I saw the stage manager, they were over by OP.
I'm sorry, it looks like the book you're looking for has been marked OP.
Well, if the commander wants eyes out, he should sent a grunt up the O.P. to give us a hand.
References:
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