Having an great lightness or delicateness (8)

I believe the answer is:

ethereal

(Other definitions for ethereal that I've seen before include "Insubstantial or not of this world" , "Airy; heavenly" , "Having an unreal lightness or delicateness" , "Take ale there: it's light and delicate" , "Airy, celestial" .)

I've seen this clue in The Irish Times.

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