To remove from existance, to make not exist anymore, to completely defeat. a word, that when said, ends the coversation.
matt hey sam, you have weird hair.
sam de-exist!
by NONEFUCKTARDS February 6, 2010
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when there is really no necessity, no valid reason to ignore her anymore but what do i know
Mu'ammar, dearest bratty twat, you de-existing her
by Krkič May 29, 2019
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