Simple past tense and past participle of unhappen.(verb)
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Use "unhappened" in a sentence
"So intermixed bubbles of H2 and O2 gas (from those molecules whose OH bond "unhappened") begin appearing throughout the vacuum-tickled "water"."
"One is a watergas process, one is a cure for cancer (100\% success in phase one animal trials), one is an energy-from-the-vacuum process by Mills (the hydrino process), one is the Soviet technology of "cold molding" whereby lattice bonds of a material (specifically, titanium) are "unhappened" by the tickled vacuum, thus liquifying the titanium at room temperature so that it can be simply poured in very thick molds (submarine hulls)."