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1. defining something or someone that is very unique and interesting
2. used sometimes to soothe awkward moments
also: koolr, koolst
"Wow! Your fit is so koo."
I think that I'm koolr than you, tho
koo by louafsique July 5, 2020
Related Words
Kool-aid kook kool Koo kool aid man koof koofy kookie kookies koons
Essentially means being wise to something, “in the know”, and generally understanding how things work. To “know the koo” is the same as to “know the score” in a situation. You can use it as “knowing the koo” or as being “koo’d up”. So, in London you might hear something like:
“You shouldn’t say stuff like that around here! You need to be more koo’d up!”

“Just follow him, he knows the koo.”
Koo by Basskadet June 2, 2019
That du rag be koo dawg.
koo by Wangsta November 18, 2003
The act of which the primary aim is to gain, regain or sustain social status, by partaking in an action that the individual perceives to be "cool".
Person A embarrasses Person B in front of Girl C that Person B is trying to impress/pull/shag etc.

(Hence being koo!)

Person B would then have licence to say: "Very Koo!"
koo by Sensini November 4, 2005
The name of a family that mainly consists of Sunnykoo, CorruptVonKoo, Corruptikoo, BritishVonKoo and many more.
They have been known for planning many everyday things that happened in Roblox Blood And Iron Discord.
"Blame the koos!"
"Herman is gay koo member!"
"Koos backed lastquest elections!"
"Koos caused lastquest to change wrong perms!"
Koo by ProtoGodzilla December 24, 2019
a person who is a total genius. These people have GPAs of 5.1. Even though there is a lack of koo-i-ness in people, they totally own any other random last names. Comes with a huge abnormally large head. Common sense not included.
Wow did you see how that smart guy walked into a wall and then crushed it with his abnormally large head, must be a koo.
koo by Pandapwnsyou December 24, 2010