light, airy, or tenuous

an ethereal world created through the poetic imagination.

extremely delicate or refined

ethereal beauty.

heavenly or celestial

gone to his ethereal home.

of or pertaining to the upper regions of space.

Chemistry . pertaining to, containing, or resembling ethyl ether.

adjective

earthly , indelicate , worldly

adjective

aerial , airy , celestial , dainty , divine , empyreal , empyrean , exquisite , fairy , filmy , fine , gaseous , ghostly , gossamer , impalpable , insubstantial , intangible , light , rarefied , refined , spiritual , sublime , subtle , supernal , tenuous , unearthly , unsubstantial , unworldly , vaporous , vapory , aery , diaphanous , gauzy , gossamery , sheer , transparent , delicate , fragile , heavenly