when you remove a friend from a social networking site like facebook
After he got married, at his wife's urging, he defriended all of his exgirlfriends from his facebook profile.

That guy writes annoying notes in his facebook profile so I defriended him.

WTF did he defriend me?
by scarpeta November 8, 2008
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An aggressive form of "unfriending", usually with full knowledge that the person is aware of the action
"I'm fed up with her politics and her crowd. I'll just defriend her!"
by andrex_ca February 1, 2017
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1. To remove someone from your Livejournal, MySpace, Facebook, or other social networking site. Doing this is often seen as a passive-aggressive move, telling the person without telling them that you no longer want to be friends. It's also commonly a response to drama. Defriending someone often causes more drama. There are sometimes valid reasons for doing this.

2. A sarcastic/joking reference to definition (1). Said to a friend who's being mildly irritating, joking that their behaviour would cause the speaker to 'take them off their friendlist'.

1. a) "Can you believe Amy defriended me because I'm dating Chris? She only doesn't like him because he turned down her friend Nicole two years ago. How lame."

b) "Yeah, so I had to defriend Charlie. He kept cluttering up my friendlist with stupid memes, and we haven't even communicated in a year. We'll probably never see each other again, so there's no point.

2. Julie: "I really like Sawyer and Kate together on Lost!"
Sara: "Really? I prefer Jack and Kate, I don't really like Sawyer."
Julie, jokingly: "I can't believe you think that! Oh my god you are SO defriended!"
by AllysonLinn March 6, 2008
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(v.) To choose not to be friends with someone anymore, especially by actively removing the person from a friend list on a social-networking site such as MySpace, Facebook, or LiveJournal.
"If I get one more Facebook-application request from that idiot I'm going to defriend him."
by watman March 6, 2008
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A newly-established term stemming from the internet social network crowd, meaning to remove someone from a list of friends. The term is misleading because usually neither of you were friends to begin with. "Defriending" is essentially a way of cutting off already useless communication with cyber-people.
Typical Person: "I had to totally defriend Margaret Mary. I don't want that slut looking at my profile anymore."

Sarcastic Person: "Sounds like the breakup was hard on everyone."
by ex-cretin November 22, 2009
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(v.) To choose not to be friends with someone anymore, especially by actively removing the person from a friend list on a social-networking site such as MySpace, Facebook, or LiveJournal.
"If I get one more Facebook-application request from that idiot I'm going to defriend him."
by watman March 5, 2008
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1. Verb - the act of removing someone from your friends list on any social network.
1a. Verb - the act of ending a friendship with someone either on a social network or in the 3D world.

Synonym - see "unfriend"
He was tired of always inviting Dave to things and never once did Dave show up. Not to dinners, not to movies, not to free concerts, not to the clubs, nothing. Most of the time, he never even got a response, yay or nay. And Dave never invited him anywhere.

Hal was through with the whole thing and after all this time, finally, defriended the one guy he thought would be his pal forever.
by nolana plume August 25, 2009
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