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OSO

(Other Significant Other)

1. A partner's other partner; metamour.

2. A person's partner, sometimes but not always a non-primary or non-spouse partner

This is Bob, my SO, and this is John, my OSO

This is Bob, my husband, and this is Jill, his OSO

by Joreth April 09, 2010


OSO

"Other significant other". A non-primary partner in a polyamorous relationship; a fuck buddy or friend with benefits.

"meeting new OSOs always makes me nervous."
"My SO found a new friend online; she's already talking about making him an OSO, which kind of squicks me."

by guyjin March 21, 2007


OSO

The Don , Top Dog , The king.

OSO said to do it. So I did it. It was OSO so I had no choice.

by ?Idk! October 09, 2020


OSO

A big, fat, lazy person, with no concept of work ethics. May be overheard uttering "you know what?" This person claims, "I only eat one meal a day?" Tells co-workers to focus more on their jobs and then excuses himself for a 3 hour lunch.

Father to son: "Son, you keep slacking like that, you'll end up an Oso."

by Ted Kamprad April 20, 2006


oso

oso meaning most feared name rings bells not ot be played with

oso in town go in the house

by chreme1789 November 13, 2020


oso

Oso meaning ya name ring bells someone to be scared of he is a menace

oso is on the block we finna die

by chreme1789 November 13, 2020


Oso

A thug of large stature. Usually independent of chains of street gang affiliations. Not to be toyed with. Spanish word for BEAR.

You do that wanna mess with Oso he is unstable.

by Big O 213 April 27, 2019