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Something unexplainable, or unusual.
That zombie invasion was Freakadelic.
by Balec Gnot March 16, 2008
a word used to describe a situation, person, or object that goes beyond the normal levels of what one would consider psychedelic and moves into the ultra sexy realm of freakiness
Damn, that girl is freakadelic!

That orgy at your moms house fullfilled all of my freakadelic fantasies.

The scene inside that concert was straight freakadelic.
by Jimmy John December 05, 2004