OSA

Church of Scientology's Office of Special Affairs.

May refer to Anonymous gathering information on someone, like possible scientologists, using OSA's own methods.
"Odd username. Can you OSA it?"
-"Yeah, hang on. Ok I got his name, adress, phone number and facebook account."
by Amidoinitrite March 04, 2010
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OSA

Overwhelming Sense of Apathy

Medically unrecognised addition to the collection of overused psychological acronysms applied to normal teenage behaviour.
"I could have done something about it, but my OSA was acting up."
by skate_08 August 16, 2008
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OSA

Outdoor sitting area; a small sitting space adjacent to a walk, patio, or porch
Tonight, why don’t we have friends over, sit on the OSA, light the fire, and have cocktails.
by Capo-n-Capo March 29, 2020
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OSA

Ah him yeah he’s cool he’s my OSA.
by Tmrgoat June 12, 2018
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OSA

Stands for "Overly Sized Ass"
by Bman111 April 27, 2017
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Osa

The most caring and handsome person in the world. He makes you laugh like crazy and radiates sunshine and positivity. Osa will always be there for you when you need him and will never judge you no matter what. He’s shy at first but once you get to know him you’ll learn just how amazing (and freaky) he is. Hands down one of the best people you could ever have in your life.
He’s amazing, he must be named osa
by Cranberryy April 20, 2019
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Osas

Osas is a Nigerian name give to a male who is handsome also someone who people believe they can trust and have a good connection with.

Osas can be very jealous and lies about his affection towards ladies, you think he is quite until he becomes your friend.

Overall Osas is a fun guy to be around.
Osas is my guy
by Okadigbo August 11, 2019
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