ethereal

Adjective
  1. Characterized by lightness and insubstantiality;
    As impalpable or intangible as air (synset 300628872)
    "figures light and aeriform come unlooked for and melt away"; "aerial fancies"; "an airy apparition"; "physical rather than ethereal forms"
    similar to: insubstantial, unreal, unsubstantial - lacking material form or substance; unreal
    same as: aerial, aeriform, aery, airy
  2. Of or containing or dissolved in ether (synset 302882364)
    "ethereal solution"
    referred to in: chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
  3. Of heaven or the spirit (synset 301182889)
    "celestial peace"; "ethereal melodies"; "the supernal happiness of a quiet death"
    similar to: heavenly - of or belonging to heaven or god
    same as: celestial, supernal
  4. Characterized by unusual lightness and delicacy (synset 300709899)
    "this smallest and most ethereal of birds"; "gossamer shading through his playing"
    similar to: delicate - exquisitely fine and subtle and pleasing; susceptible to injury
    same as: gossamer

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