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Adjective: insubstantial  `in-sub'stan-shul
  1. Lacking material form or substance; unreal
    "as insubstantial as a dream"; "an insubstantial mirage on the horizon"
    - unsubstantial, unreal
     
  2. Lacking in nutritive value
    "the insubstantial diets of the very poor"
    - jejune

See also: aerial, aeriform, aery, airy, ethereal, immaterial, insubstantiality, nonmaterial, shadowy, solidness, stringy, substantiality, substantialness, unwholesome, wraithlike

Antonym: substantial

Nearest

instrumental music
instrumental role
instrumentalism
instrumentalist
instrumentality
instrumentally
instrumentate
instrumentation
insubordinate
insubordination
insubstantial
insubstantiality
insubstantially
insufferable
insufferably
insufficiency
insufficient
insufficiently
insufflate
insufflation
insulant