chair, palpable, preside, tangible

ideational, phantasmal, depthless, numinous, demoniac, incorporeal, vivifying, beethovenian, unnamable, cohering, effacement, entropic, incommunicable, formless, illimitable, literalized, hieratic, unnameable, unpleasing, unperceived, echoic, penumbral, chthonic, pellucid, connotative, centripetal, saurian, denotative, delusive, lucent, nabokovian, reified, preconscious, changeless, unbeautiful, aleatory, lambent, creaturely, apparitional, cultureless, protoplasmic, hypnagogic, ineradicable, perspicuous, ludic, oneiric, unrepressed, scaleless, noetic, excremental, supernal, synesthetic, glottal, unexampled, corpuscular, tympanic, refulgent, untempered, sheerest, prelapsarian, factitious, hemingwayesque, delusory, unoffending, apollonian, assimilative, tenebrous, evanescent, nacreous, arachnoid, polymorphous, libidinal, macrocosmic, cabalistic, primordial, undefinable, onanistic, stygian, intractably, semiotic, amoebic, westernism, ineluctable, unpoetic, contrastive, batlike, brownian, unwonted, liminal, sensate, bodiless, miasmic, choiceless, illusional, demoniacal, exoteric, anthropologic, wonted, syllogistic, raptorial, einsteinian, maidenly, imponderable, subtile, ethereal, vaporous, etherial, immaterial, indestructible, insubstantial, intangible, invisible, ponderable, unreal, unsubstantial, diviner, nebulous, obscuring, supersensible, elusive

aerial, aeriform, aery, airy, ethereal

imperceptible, subtle, unperceivable