[1] : The Collaborative International Dictionary of English v.0.48

unsubstantial \unsubstantial\
   see substantial.
see also:
substantial 

[2] : The Collaborative International Dictionary of English v.0.48

unsubstantial \un`substan"tial\, a.
   lacking in matter or substance; visionary; chimerical.
   1913 webster

[3] : WordNet (r) 2.0

unsubstantial
     adj : lacking material form or substance; unreal; "as
           insubstantial as a dream"; "an insubstantial mirage on
           the horizon" syn: insubstantial, unreal ant: substantial
see also:
insubstantial unreal substantial 

[4] : Moby Thesaurus II by Grady Ward, 1.0

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

Unsubstantial >> U Words
Unsubstantial, definition of term: Unsubstantial
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