look up any word, like cleveland steamer:
 
1.
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 Andr3w wuds. February 06, 2010
 
2.
The absence of existence or that which does not permit existence.
Journalistic integrity deexists.
by KrazyC October 04, 2007