(n.) The quality or state of being unreal; want of reality.

Prospero absence airiness appearance autism autistic thinking bodilessness delusiveness deprivation dereism dereistic thinking dreamery emptiness ethereality fallaciousness false appearance false light false show falseness flight of fancy flimsiness ideal idealism ideality idealization illusionism illusionist illusiveness imaginative exercise immateriality impalpability imponderability impracticality incorporeality insubstantiality intangibility magic magic act magic show magician mistiness negation negativeness negativity nihility nonbeing nonentity nonexistence nonoccurrence nonreality nonsubsistence not-being nothingness nullity play of fancy prestidigitation quixotism quixotry romance romanticism seeming semblance show simulacrum sleight of hand sorcerer sorcery specious appearance subtility subtlety tenuity tenuousness unactuality unconcreteness unpracticalness unrealism unsolidity unsubstantiality unsubstantialness utopianism vacancy vacuity vacuum vagueness visionariness void wish fulfillment wish-fulfillment fantasy wishful thinking