unsubstantial

unsubstantial
    adj 1: lacking material form or substance; unreal; "as
           insubstantial as a dream"; "an insubstantial mirage on
           the horizon" [syn: {insubstantial}, {unsubstantial},
           {unreal}] [ant: {material}, {real}, {substantial}]
    

Unsubstantial \Unsubstantial\
   See {substantial}.
    

Unsubstantial \Un`sub*stan"tial\, a.
   Lacking in matter or substance; visionary; chimerical.
   [1913 Webster]
    

182 Moby Thesaurus words for "unsubstantial":
      Barmecidal, Barmecide, adulterated, airy, apparent, apparitional,
      asomatous, astral, attenuate, attenuated, autistic, bodiless,
      breakable, brittle, cheap-jack, chimeric, cobwebby, crumbling,
      crumbly, cut, dainty, dangerous, decarnate, decarnated, deceptive,
      decrepit, delicate, delicately weak, delusional, delusionary,
      delusive, delusory, dereistic, desultory, dilute, diluted,
      discarnate, disembodied, disintegrating, dreamlike, dreamy,
      effeminate, erroneous, ethereal, extramundane, fallacious, false,
      fanciful, fantastic, feeble, fine, flimsy, fragile, frail,
      frangible, gaseous, ghostly, gimcrack, gimcracky, gossamery,
      hazardous, illusional, illusionary, illusive, illusory, imaginary,
      immaterial, impalpable, imponderable, improbable, inconceivable,
      inconclusive, incorporate, incorporeal, incredible, infirm,
      insecure, insubstantial, intangible, jerry, jerry-built, light,
      lightweight, merely nominal, metaphysical, misleading, namby-pamby,
      nonmaterial, nonphysical, nonsubstantial, not real, occult,
      ostensible, otherworldly, papery, pasteboardy, perilous,
      phantasmagoric, phantasmal, phantom, poor, poorish, precarious,
      provisional, psychic, puny, rare, rarefied, risky, rotten,
      rotten at, seeming, self-deceptive, self-deluding, shadowy, shaky,
      shattery, shifting, shifty, sissified, sleazy, slight, slippery,
      specious, spectral, spiritual, subtile, subtle, supernatural,
      supposititious, tacky, temporary, tentative, tenuous, thick, thin,
      thinned, thinned-out, ticklish, transmundane, treacherous,
      unactual, unbelievable, uncompact, uncompressed, unconcrete,
      unconvincing, undependable, unearthly, unembodied, unextended,
      unfaithworthy, unfirm, unfleshly, unfounded, unphysical, unproved,
      unreal, unrealistic, unreliable, unrigorous, unsolid, unsound,
      unstable, unsteadfast, unsteady, unsturdy, unsubstanced, unsure,
      unsustained, untrustworthy, unworldly, vaporous, visionary,
      watered, watered-down, weak, weakly, weightless, windy, wispy,
      womanish