Synonyms: insubstantial, unreal, unsubstantial
Definition: lacking material form or substance; unreal
Usage: as insubstantial as a dream; an insubstantial mirage on the horizon
Similar words: aerial, aeriform, aery, airy, ethereal
Definition: characterized by lightness and insubstantiality; as impalpable or intangible as air
Usage: figures light and aeriform come unlooked for and melt away- Thomas Carlyle; aerial fancies; an airy apparition; physical rather than ethereal forms
Similar words: wraithlike, shadowy
Definition: lacking in substance
Usage: strange fancies of unreal and shadowy worlds- W.A.Butler; dim shadowy forms; a wraithlike column of smoke
Similar words: stringy
Definition: consisting of or containing string or strings