penumbras, ectoplasm, florescence, exhalations, effluvium, ether, phantasms, psychokinesis, unnamable, supernaturalism, pulsations, abyssal, nothingness, effusions, congeries, putrescence, interstices, aether, vomitus, redolence, phlogiston, sublimity, revenant, resonances, biogenic, spectral, infinities, antineutrinos, baryon, protoplasm, mustiness, psychic phenomena, beings, interpenetrate, abysses, antiquarks, flatus, blowholes, fumaroles, fantasias, narcosis, miasma, malignity, koans, apparitions, substratum, hobgoblins, mysterium, phenomena, evanescence, vapors, tumescence, immanence, idolatries, hydras, odors, putrefaction, plantlike, aureole, euphony, incubus, apercus, antiparticles, insubstantiality, cohering, singularities, casuistry, indwelling, supernal, krypton, auras, effulgence, transcendentalism, vortexes, dissonances, orifices, cathode rays, specters, fug, noosphere, perversions, airglow, threnody, pietism, glissandos, crudities, wavelike, antigravity, manifestations, phantoms, mewl, poltergeists, cacophonies, abstractions, jovian, referents, deism, presentiment, excremental, caterwaul, sonification, transcendental, emanation, effluvia, presences, radiations, contagion, effluence, aura, odours, realms, volitions, angels, exhalation

spectral