OOS

Out Of Stock. As in, a retailer is selling something and they ran out of it.

Check out this deal at somewebsite! It's a total steal! Oops, it's OOS.

by Anonymous_Cow May 4, 2006

OoS

Out of Sync. Problem that used to plague Age of Mythology's online matchmaking service, ESO, until a patch fixed it. Any one player being "out of sync" would crash the game for all players involved. Only comes up now in rare instances.

Fizzuck, I got teh OoS and my game crashed. CURSES BE TO ZEUS!!

by Cataphract_40 September 21, 2004

Oos

An expression used to display surprise, disgust, hatred, awe, excitement or acceptance. Oos is a flexible term that can be jammed into almost any scenario and still make sense. Its pronunciation is paramount in order to convey maximum effectiveness. the oo at the start is said the same way as the oo in book is pronounced, and the s is normal. Oo-s.

Billy: Oi Kurt, dare you to drink the bong water you pussy faggot
Kurt: Yeah righto mate, bottoms up shit head! (drinks bong water)
Billy: Oos!

Jameson: Oi check that bird with the nice ass.
Max: Oos bro that's one hell of a piece!
(chick turns around and reveals a proper hunchback from 300 face)
Jameson & Max: Ooooooss!!

Bob: Oi Jessup, a hundred bucks if you shoot a basket from the half-way line.
Jessup: You're on mate. (He shoots, he scores!)
Bob: Oos cunt. Here's a watermelon.

Dangles: Oi Wally, what do you get when you throw a baby down the stairs?
Wally: I don't know you bloody noonga. What?
Dangles: An erection!
Wally: Oos.

by the mother fucking judge November 5, 2013

OOS

A tech term that means "Out of service"

It can be a site, server or a provider

ex.
Yahoo is now OOS

or
internet provider is OOS

by Omar AbuAli May 5, 2009

Oos

The oldest known definition that precedes all these Millennial driven meanings is that of, "Yes, I understand" which has it's roots in martial arts training or history of the GoJu Ryu. That is the deepest most meaningful meaning. However, it also expands over a broader range to mean, "I see. I acknowledge."

Eg. Someone shows you how to do something. Oos! And is said in thankful tone.

You can approach someone right after graduation. Oooos! Said with excitement.

You can be reprimanded about something. Oos. Said with an I'm sorry attitude.

There is a whole yin-yang aspect to it. Can be soft, hard, or however it needs to conform to the scenario.

Tony was training for a full contact fight and was placed on a strict diet. While working for Sensei, he dumbly ordered a pizza and proceeded to eat it in front of Sensei. Clearly Sensei was not pleased. He reamed Tony out with disbelief. Tony replied in an apologetic but understanding manner, Oos Sensei. Tony went on to lose the fight is fat today

Johnny was courting Stephanie for a few months, but was holding out. When Johnny woke up in the morning with a massive smile, his roommate knowing that Stephanie slept over, he paused and said, Noooo?! Johnny said with a huge grin, YES! Johnny replied almost yelling, OOOOOOOS! and fist bumping him.

Jill was a 1st year resident at the local hospital. During the operating room procedure the surgeon showed her how to do a technique. She replied, thankfully, Oos. The surgeon said, "hunh". Jill said, oh, sorry...had you mixed up with my Sensei. The surgeon still confused proceeded with the case.

by Cat's Incredulous June 12, 2021

oos

The sound a vagina makes when a large object is thrust into it.

oos oos oos oos oos oos oos oos oos

by gabeZilla December 7, 2004

OOS

1: Out of stock, as in a brand being sold out.
2: Out of style

1: Aw man! The shoes I wanted in my size are OOS!
2: "Did you see Ashley yesterday? Her Juicy trackpants are so OOS!"

by Maybelline October 22, 2007