So light and insubstantial as to resemble air or a thin film
Her hair fell softly around her face and she had an ethereal glow about her.
It was the most ethereal flight I had ever witnessed.
She wouldn't be buried in the ethereal silks of the wealthy or have her hair inlaid with flowers and perfumes.
They form compounds with hydrochloric acid when this gas is passed into their ethereal solution; these compounds, however, are very unstable, being readily decomposed by water.