nonphysical

from WordNet (r) 3.0 (2006)

nonphysical
    adj 1: lacking substance or reality; incapable of being touched
           or seen; "that intangible thing--the soul" [syn:
           {intangible}, {nonphysical}]

from Moby Thesaurus II by Grady Ward, 1.0

35 Moby Thesaurus words for "nonphysical":
      airy, asomatous, astral, bodiless, decarnate, decarnated,
      discarnate, disembodied, ethereal, extramundane, ghostly,
      immaterial, impalpable, imponderable, incorporate, incorporeal,
      insubstantial, intangible, metaphysical, nonmaterial, occult,
      otherworldly, phantom, psychic, shadowy, spiritual, supernatural,
      transmundane, unearthly, unembodied, unextended, unfleshly,
      unphysical, unsubstantial, unworldly