#op- is a prefix indicating that the word it is attached to is the target of a hacktivist attack by an individual or group under the mantle of "Anonymous." The word it is attached to could also be the entity avenged by the hacker attacks.
Anonymous A: "Now Ireland's talking about legalizing web censorship?"
Anonymous B: "That's why #Op- Ireland (#OpIreland) is in full force. We've already hacked some of their government websites.
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Anonymous C: "Why can't I get my files from MegaUpload anymore?"
Anonymous D: "Dude, have you had your head in the cloud. Don't you know the feds took down the site?"
Anonymous C: "Man,*&%$ that! #OpMegaUpload! See how the feds like their own medicine.
by Ghaliji January 27, 2012
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A person on the opposing end.
Lame, wack, fake, fraudulent.

The opposition
I knew ole boy was an Op as soon as he opened his mouth!
by Veda.da.Diva January 17, 2018
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Ope is the Midwestern way of acknowledging another person or thing that they have encountered.
Ope! Sorry I bumped into you Jim.

Ope, there's my wallet.

Ope! I missed my bus!
by Pandar937 April 11, 2018
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The opposition, opponent, the opposing party; in short, the enemy.
Don't trust her, she hangs out with the ops.
by Brooklyn Bombshell August 14, 2017
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Opposites or rivals from another gang or opposing group commonly misinterpreted as ops being short for cops or snitches.
Running from the ops, shooting at the ops
by nahsra August 30, 2017
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It's a Midwest thing. When someone cuts in front of you rudely, when you are surprised, when you bump into someone, or when something is offensively funny, you use the word ope.
Boss: You're getting a promotion

You: Ope, really? Thank you so much

*bumbs into someone at the mall*
You: Ope sorry my bad
by aannettec July 6, 2017
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“Ope, that is not a toilet
“Ope, not on the dog dude”
by Bubba Sudz May 23, 2019
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