WORD.

Ethereal-

[ih-theer-ee-uhl]

-adjective

1. light, airy, or tenuous: an ethereal world created through poetic imagination

2. extremely delicate or refined: exquisite

3. spiritual or celestrial: gone to his ethereal home

4. of or pertaining to the upper regions of space.

Origin:

1510s, from ether + -al; extended sense of "light, airy" is from 1598.