Definition of "unhappen" [unhappen]

• To cease to have happened; to undo itself. (verb)

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• "We shall be able to "unhappen" essentially any disease quickly and cheaply, by assembling the exactly required "tickling pattern" to "unhappen" that specific disease in the diseased body."
• "So the ability to (1) "unhappen" things like the OH bond in water molecules, (2) "unhappen" the cancerous growth in a region of normal flesh, (3) "unhappen" the lattice bonds in titanium so that the titanium liquefies at room temperature without heating and can then be"
• "In the title story of Twilight of the Superheroes, a narrator says of 9/11, One kept waiting for that shattering day to unhappen, so that the real -- the intended -- future, the one that had been implied by the past, could unfold."