formerly also etherial, 1510s, "of the highest regions of the atmosphere," from ether + -ial; extended sense of "light, airy" is from 1590s. Figurative meaning "spirit-like, immaterial" is from 1640s. Related: Ethereally.
physical rather than ethereal forms
ethereal solution
ethereal melodies
this smallest and most ethereal of birds
Ethel
Ethelbert
Etheldred
Ethelred
ether
ethereal
etheric
ethernet
ethic
ethical
ethics