A backstabber is commonly someone who was your friend or is a sibling, but decided you weren't good enough for them so they decided to say bitchy things about you behind your back.
She was being a backstabber by telling them my secret.
by bitchfoff October 26, 2022
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Someone that would befriend your worst enemy just to get their face on a stupid fucking billboard, then try to come back claiming to be your ally.
The backstabber wasn't quite the ally or friend that she said she was, if ever you did think she was a friend of yours.
by The Original Agahnim February 2, 2022
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a person that you think is your friend but the second the get the chance, they will turn against you and do something horrible. i've met this kind of person recently, and even is you say you dont wanna be their friend, they will come crawling back,. NEVER say yes to them ever again. they're really bad infuences on others.
person1: Ew look its that girl E----h.
person2: ugh she's such a backstabber to that poor girl.
by #thisisntme July 1, 2022
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(Videogames)

Used to refer to players who attack through the back, usually on shooters.
Backstabber, no skill!!!!!11
by 2RHURQ3GHUQ580 February 20, 2023
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Someone who you tell a promise to, who says will keep, but ends up lying and telling others.
That Maria is a backstabber!
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When someone play's along to find out who the person is who wanna chat but uses a fake profile and u track that it is someone in your circel of friends. But to save his own ass he calls you pedophile and wipes your private network from all your photos and logs. Then turns your whole lifetime of friends against u and destroys your life. All because u tried to protect in the way you could by yourself.
You: -I did not ask for naked photos, films, or write to begin with. But I did find out that it was a hidden agenda and tried to find out more to protect my friends.
Friend: -It was me but you are a pedophile know and nobody wants you so go kill yourself. I don't wanna see the proof bc Ik u r telling the truth. That your own fault to trust your friends bc we r bad. I don't care that u tried to help us against scammers. It was us all along. Bye

Everyone: -That is what we call a backstabber but you suit yourself bc we don't listen to honesty. We laugh at your pain when u die trying to save us.
by Sheisnotme January 10, 2021
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Former TSM Toplaner Dyrus
Man, what Dyrus did to qt and Dignitas really made him a Backstabber.
by BackyardBooster February 18, 2017
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