(n.) The act of disembodying, or the state of being disembodied.

Prospero airiness appearance autism autistic thinking delusiveness dematerialization dereism dereistic thinking disembodiment dreamery etherealization fallaciousness false appearance false light false show falseness flight of fancy ideal idealism ideality illusionism illusionist illusiveness imaginative exercise immateriality immaterialization impracticality magic magic act magic show magician play of fancy prestidigitation quixotism quixotry romance romanticism seeming semblance show simulacrum sleight of hand sorcerer sorcery specious appearance spiritualization unactuality unpracticalness unrealism unreality unsubstantiality unsubstantialization utopianism visionariness wish fulfillment wish-fulfillment fantasy wishful thinking