Ethereal
adjective
Pertaining to the hypothetical upper, purer air, or to the higher regions beyond the earth or beyond the atmosphere; celestial; otherworldly.
“ethereal space ethereal regions”
Consisting of ether; hence, exceedingly light or airy; tenuous; spiritlike; characterized by extreme delicacy, as form, manner, thought, etc.
Delicate, light and airy.
Synonyms: ethereous, gossamer, aereous, mystical, transcendental, ethereous, etheric, etherical