Definition of "defriend" [defriend]

• To remove from one's list of friends (e.g. on a social networking website). (verb)

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• "With that on my mind, I begin to think of the entire "defriend" - "defriended" - "defriending" concept, It struck me that although the words are new and vastly unappealing, they point to an aspect of the marvelous but often prickly institution of friendship."
• "What I will deny is that "defriend," "defriended" and "defriending" are words I want to use -- on or off Facebook -- even if they apply to an irrefutable, though unfortunate, human condition."
• "And I wouldn't hold a grudge against No. 144, if she had suddenly decided to "defriend" me after all these weeks."