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The Collaborative International Dictionary
Unsubstantial

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

Douglas Harper's Etymology Dictionary
unsubstantial

mid-15c., from un- (1) "not" + substantial (adj.).

Wiktionary
unsubstantial

a. (context archaic English) (alternative form of insubstantial English)

WordNet
unsubstantial

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

Usage examples of "unsubstantial".

Too unsubstantial to sustain its own weight, it sprawls, like the track of a tipsy snail, indeterminately, slowly developing its sinuosities over the irregular surface of a rock, and slightly adherent thereto, throughout its whole length.

Darwin, casting about for a substantial difference, and being unable to find one, committed the Gladstonian blunder of mistaking an unsubstantial for a substantial one.

For still the garden stood in golden mist, Still, like a river of molten amethyst, The Seine slipt through its spans of fretted stone, And, near the grille that once fenced in a throne, The fountains still unbraided to the day The unsubstantial silver of their spray.

It begins sufficiently well, but the author has hardly enunciated his preliminary apophthegms, when he conducts into an obscurity where we can hardly grope our way, and when we emerge from that, it is to be bewildered by his gorgeous but unsubstantial pictures of sagely perfection.

This promise of a pension was perhaps the most unsubstantial portion of his reward, for Sigismund himself became a pensioner shortly after the events last narrated.

One reason why the scholar does not make the world of the past, the world of books, real to his fellows and serviceable to them, is that it is not real to himself, but a mere unsubstantial place of intellectual idleness, where he dallies some years before he begins his task in life.