ethereal

(s) characterized by lightness and insubstantiality; as impalpable or intangible as air
- "figures light and aeriform come unlooked for and melt away"- Thomas Carlyle
- aerial fancies
- an airy apparition
- physical rather than ethereal forms
aery, aerial, aeriform, airy,
(a) of or containing or dissolved in ether
- ethereal solution
(s) of heaven or the spirit
- celestial peace
- ethereal melodies
- the supernal happiness of a quiet death
supernal, celestial,
(s) characterized by unusual lightness and delicacy
- this smallest and most ethereal of birds
- gossamer shading through his playing
gossamer,

aery aerial aeriform airy supernal celestial gossamer

etherealize