ko

OK backwards. Originally from Short Circuit 2 (1988), K.O. Derf is OK Fred backwards. Became more common with the rise of chatrooms and IM with people who can't or don't waste time trying to type well.

fred: are you ok?
#5: Functioning 100%. Perfectly K.O., Derf!
fred: it's fred
#5: That's what i said, Derf!


im user 1: i gtg
im user 2: wait bring that cd tomorrow
im user 1: ko durf ttyl

by joefitz July 19, 2005

KOS

KOS is a common word used in Garry's Mod, DarkRP.
This is used as a signal to say if in my base you will be killed and there is a reason for the kill.
It should not be used on anything else but your base.

*In text above base* If in base KOS/Kill on sight.
*In text above base* If shooting in base KOS.

by Gmod Definitions September 13, 2018

ko

person cooler than u

ppn <3 ko

by LP April 07, 2003

ko

Cool, but spelled differently and sometimes used in mmorpg's

Person 1: Want to go to the park?
Person 2: I guess that's ko...

by Zarathaz March 30, 2006

KO

Stands for a "Kill of Opportunity."
Could be a noun describing the target, or a verb describing how to kill the target.

When both Sadam Hussein and Usama Bin Laden arrive for the exchange, sniper teams 1 and 2 will take both targets out. Consider any other armed associates at the scene a KO.

We can't risk him getting captured. I don't want to go to jail while he goes free just because that child-raping pos cried police brutality. No, if any of us get a clean shot, we KO his ass! Understood?

by inane5 February 25, 2005

ko

1. ko is a person who has a fro
2. Ko is a person who is a pro in J walking
3. Ko is a Gigolo which you call a man ho
4. Ko is an Aviator
5. Ko could also meen a short fat person.

Ko can u brush your fro with a fro pick?
Ko how many girls can you fuck in a day?
Look at that Ko.

by Ariel Gad January 26, 2007

ko

Knifed-Out; taken down by a melee weapon in (any game).

The leet player was ko by a noob.

by l337no0bi3 February 13, 2009