(n.) The quality or state of being slight; slenderness; feebleness; superficiality; also, formerly, negligence; indifference; disregard.

Prospero airy nothing airy texture appearance ascent attenuation bodilessness bounce breeziness bubbliness buoyancy carefreeness chirpiness daintiness debonairness delicacy delusiveness diaphanousness dilutedness dilution downiness draftiness ethereality exiguity exility fallaciousness false appearance false light false show falseness fineness flimsiness floatability fluffiness foaminess frailty frothiness gauziness gentleness gossameriness gracility gustiness idealization illusionism illusionist illusiveness immateriality impalpability imponderability incorporeality insolidity insubstantiality intangibility jauntiness laciness lack of weight levitation levity light heart lightheartedness lightness lightsomeness magic magic act magic show magician mistiness paperiness perkiness pertness prestidigitation rareness rarity resilience seeming semblance show simulacrum sleight of hand slenderness slightness slimness softness sorcerer sorcery specious appearance subtility subtilty subtlety tenderness tenuity tenuousness thinness unactuality unconcreteness unheaviness unreality unsolidity unsubstantiality unsubstantialness vagueness volatility wateriness weakness weightlessness windiness wispiness yeastiness