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this is a clas of SCP's. "Keter" is assigned to subjects that both display vigorous, active hostility to human life, civilization, and/or spacetime, and are capable of causing significant destruction in the event of a containment breach. Such subjects must be cataloged, contained according to special containment procedures, and destroyed, if possible.

Merely being inimical to human life is not in itself cause for classification as a Keter-level object. A Keter classification indicates that not only is this subject capable of inflicting devastating harm to human life and civilization, but that containment protocols must be extensive, involved, and precisely followed in order to prevent it from doing so. Research into the neutralization of Keter-class SCPs is always a top priority for the Foundation.

Cases where Keter-class objects that can be neutralized by Foundation personnel persist in Foundation custody are rare, and are grouped into three main categories. In addition to cases where destruction of the object continues to be unfeasible due to apparent invulnerability or similar circumstance, there are some Keter-class objects with significant tactical value for the Foundation, as well as Keter-class objects that threaten more harm to humanity from their neutralization than from their continued existence.
d-class personel 1 : "whats the type of scp we are going to"
d-class personel 2: "i think i heard keter"
d-class personel1: "fuck"
keter by NOT king dr. Bright February 21, 2019
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a class for SCPs, contrary to popular belief, a SCP being Keter dose not mean it is extremely destructive, it means it is hard/impossible to contain

EX: cat who randomly switches places with another cat anywhere on earth would be considered Keter and a button that can destroy the entire universe when it's pressed would not be keter.
"man where so good at escaping prisons we should be classified as keter"
Keter by guy47 September 20, 2020
Related Words
The process of shoving a can of green beans 13.5 inches down your asshole.
keter by Fuck wit em January 29, 2018
A magnificent ship created by the gods for the gods.

Peter strongly loves Kaitlyn, and will do anything to defend his never dying love for her.

A contraction of the two names Kaitlyn and Peter.
Yo! HAVE YOU HEARD OF THE NEW SHIP, KETER?
Keter by foreskin gamer February 11, 2019

Katerina 

Katerina, also known as Kate or Kat, is a very attractive girl, although she might not notice that for quite a while. The most wonderful thing about Katerina is her crazy personality; she is extremely fun to hang out with. Katerinas' personality is really rare. She is often quite sporty, caring, funny generous and just an amazing person in general. If you know a Katerina, you absolutely have to get close to her. Just don't get on her bad side.
''Dude, is that Katerina?''
''What is she doing on the roof of McDonald's?''
Katerina by mashatheweirda September 5, 2019

Katerino 

a Woman who cheats on a guy with 5 boyfriends while dating.
Person 1: I'm sorry I cheated on you with 5 guys

Person 2: Wow! What a fucking Katerino.

Person 1: But I was lost and confused!
Katerino by pabliitooo April 16, 2020

Joe Keery 

Only Joe Keery would parent the crackhead kids on Stranger Things.
Joe Keery by kaylaaaa_sucks December 3, 2017