WordNet 3.0 Copyright © 2006 by Princeton University.
- 1. insubstantial (vs. substantial), unsubstantial, unreal, aeriform, aerial, airy, aery, ethereal, shadowy, wraithlike, stringy, immaterial#3, nonmaterial
- usage: lacking material form or substance; unreal; "as insubstantial as a dream"; "an insubstantial mirage on the horizon"
- 2. insubstantial, jejune, unwholesome (vs. wholesome)
- usage: lacking in nutritive value; "the jejune diets of the very poor"
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See also: insubstantial (Dictionary)