immateriality (n.)
- airiness
- apparition
- appearance
- banshee
- concealment
- control
- disappearance
- disassociation
- disconnection
- discreteness
- disjunction
- disjuncture
- dissociation
- dybbuk
- fallaciousness
- falseness
- fineness
- flimsiness
- form
- ghost
- guide
- hant
- haunt
- idealization
- illusionist
- impalpability
- imperceptibility
- impertinence
- inapplicability
- inappositeness
- inconsequence
- incorporeality
- independence
- indifference
- ineffectuality
- inferiority
- insignificance
- insubstantiality
- intangibility
- invisibility
- irrelevance
- larva
- littleness
- magic
- magician
- manes
- marginality
- materialization
- mistiness
- nonappearance
- oni
- pettiness
- phantasm
- phantasma
- phantom
- poltergeist
- presence
- prestidigitation
- puniness
- rareness
- rarity
- revenant
- secrecy
- semblance
- separateness
- shade
- shadow
- shape
- show
- simulacrum
- slightness
- smallness
- sorcerer
- sorcery
- specter
- spirit
- spook
- sprite
- subtlety
- tenuity
- theophany
- thinness
- unconnectedness
- unimportance
- unreality
- unrelatedness
- vagueness
- vision
- wraith
- zombie