bodilessness
ghostliness
immateriality
immaterialness
impalpability
imponderability
incorporeality
incorporeity
inextension
intangibility
metapsychics
metapsychism
nonexteriority
occult phenomena
occultism
otherworldliness
panpsychism
parapsychology
psychic monism
psychical research
psychicism
psychism
psychology
psychosophy
shadowiness
spirit world
spirituality
spirituousness
supernaturalism
the occult
unearthliness
unsubstantiality
unsubstantialness
unworldliness