adj. to have the attributes and characteristics of a ninja.
First used in the primal circles of the ninja clans to describe the measurement of a ninjas ability to do ninja like things.
He had so much ninjacity that the pirate never even saw his death coming.

He killed that man with so much ninjacity that his head splattered across the entire room.
by Jon Schroeder October 8, 2007
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adj. an action of incredible ninja prowess to the point it can be considered magical
Jet Li was mas ninjacal in "Once Upon A Time In China".
"that catch was ninjacal man."
by Bluseph D. Bluowski III, Esq. December 5, 2007
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