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1. One who is often reffered to as a "snitch" or "taddle tale".
Person one: Hey, Dalia told the police your the one who robbed the bank down the street.
Person two: MAN.!!! That opp is going to me back in a cell.
opp by That one guy everybody knows December 23, 2013
Related Words
Known as Wade Michael Lee "The McNugget" GoodRider, you can call him shmeeb too, you can never bust his spirit tho...
Damn dude, you are such an OPP
OPP by daylen french January 10, 2017
A snitch of some sort.
"I gunned her down then she turned into an opp".
opp by parislecosha August 31, 2017
1. other people's property.
2. other people's privates.
3. other people's penises.
4. other people's pussies.
5. Ontario Provence Police
You down wit OPP? Yeah, you know me!

I got pulled over by the OPP and they gave me a $195 dollar ticket for speeding.
OPP by PFC Karma August 22, 2006
Other Peoples' Property
OPP by presto March 21, 2003