betrayal 

1. to turn on someone you trust, or to have someone do the same to you.
2. team-killing, i.e. in a FPS. More specifically, this is the term used when one team-kills in Halo/Halo 2.

1. i had the worst betrayal the other day, when my best friend whom i thought i trusted stole my girlfriend.

2. Halo announcer: "Lost the lead! BETRAYAL!"

betrayal by Tengu October 5, 2006

betrayed

When you have been betrayed someone that seemed loyal has gone against ur will and stabbed you in the back.

steven betrayed me by not inviting me to movies.

betrayed by definitiondude12124 March 6, 2009

Thumbnail Betrayal

A thumbnail betrayal occurs on social networking sites such as facebook (the application 'are you interested' for example) when a male or female look really hot in their display picture, so u click thinking 'hell yea this is sweet' only to find out that they must have used some sort of magic 'grotesque removing' camera to take that picture with because they are, in fact, like a pile of shit which has been puked on. . attached to a bean bag chair. . with hair. .

dude: sweet this girl is hot *clicks*
dude 2: yea she looks sweet, look at her other photos
dude: omg ewwwww that was a pure thumbnail betrayal!! *gips*

Thumbnail Betrayal by muse rock October 6, 2008

Betrayed

The feeling you get when your at a party and everyone is quite the drunkness and the guy you have crushed on for ages is there and your 'friend' goes to find him to bring him back to you but doesnt end up doing that, so you go looking for her but then you find her making out by the fire with your crush...

girl- i feel so betrayed by both of them. she is meant to be my friend!

Betrayed by alice xx August 6, 2006

betrayalaton 

noun. Also see megaton.

(alternate spelling: betrayalton)

A betrayalaton is a videogame industry announcement or rumor similar to a megaton, but more specific in that it involves an highly valuable exclusive game, game series, or gaming company switching platforms or going multiplatform.

Examples of betrayalatons include:

- A rumor that Konami is porting Metal Gear Solid 4 (a PS3 exclusive) to the xbox 360.

- A rumor that Square-Enix is porting Final Fantasy XIII (a PS3 exclusive) to the xbox 360.

- Capcom porting Devil May Cry 4 (formerly a PS3 exclusive) to the xbox 360.

- Namco porting Ace Combat 6 (formerly a PS3 exclusive series) to the xbox 360.

- Sega porting Virtual Fighter 5 (formerly a PS3 exclusive) to the xbox 360.

"Capcom just confirmed that Devil May Cry 4 is coming out for xbox 360. Betrayalaton!! PS3 d00m3d!"

betrayalaton by aaaaa June 17, 2007

Betrayalism 

Study of betrayal also often refered to as snakes

The people who backstab you are considered under betrayalism

Betrayalism by Macbeth November 27, 2017

Betrayal Goblin

And underhanded Gobbo that fails to read fine print and sells his friends to hell for 5 gold.

Jerry is such a Betrayal Goblin. He ate everyone's breakfaasts.

Betrayal Goblin by IceStormLily November 11, 2020