Synonyms and related words :
bodilessness, ghostliness, immateriality, immaterialness, impalpability, imponderability, incorporeality, incorporeity, inextension, intangibility, nonexteriority, occult phenomena, otherworldliness, psychical research, psychicism, psychics, psychism, shadowiness, spirit world, spirituality, spirituousness, supernaturalism, the occult, unearthliness, unsubstantiality, unsubstantialness, unworldliness