1.
[syn: insubstantial, unsubstantial, unreal]
The Collaborative International Dictionary of English v.0.48:
Unsubstantial \Unsubstantial\
See substantial.
The Collaborative International Dictionary of English v.0.48:
Unsubstantial \Un`sub*stan"tial\, a.
Lacking in matter or substance; visionary; chimerical.
[1913 Webster]
WordNet (r) 3.0 (2006):
unsubstantial
adj 1: lacking material form or substance; unreal; "as
insubstantial as a dream"; "an insubstantial mirage on
the horizon" [syn: insubstantial, unsubstantial,
unreal] [ant: material, real, substantial]