IPA: /ɪˈθɪəriəl.nəs/
KK: /ɪˈθɪr.i.əl.nəs/
The quality of being light, delicate, or heavenly, often associated with something that seems too perfect for this world.
The etherealness of the music made everyone feel as if they were floating in a dream.
Etherealness is formed from "ethereal" (from Greek "aitherios", meaning of the upper air or heavenly) and the suffix "-ness" (meaning the state or quality of). The word "etherealness" refers to the quality of being ethereal, or light, airy, and delicate, often with a heavenly connotation.
Think of something that is 'heavenly' or 'light' ('ethereal') and remember that 'etherealness' describes the quality of being like that.